1
|
Liu J, Zhu J, Yu H, Zhang Z, Wu G, Yao A, Pan L, Bao K, Cui T. Structural Phase Transition and Decomposition of XeF 2 under High Pressure and Its Formation of Xe-Xe Covalent Bonds. Inorg Chem 2024; 63:12248-12254. [PMID: 38874621 DOI: 10.1021/acs.inorgchem.4c01599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Noble gases with inert chemical properties have rich bonding modes under high pressure. Interestingly, Xe and Xe form covalent bonds, originating from the theoretical simulation of the pressure-induced decomposition of XeF2, which has yet to be experimentally confirmed. Moreover, the structural phase transition and metallization of XeF2 under high pressure have always been controversial. Therefore, we conducted extensive experiments using a laser-heated diamond anvil cell technique to investigate the above issues of XeF2. We propose that XeF2 undergoes a structural phase transition and decomposition above 84.1 GPa after laser heating, and the decomposed product Xe2F contains Xe-Xe covalent bonds. Neither the pressure nor temperature alone could bring about these changes in XeF2. With our UV-vis absorption experiment, I4/mmm-XeF2 was metalized at 159 GPa. This work confirms the existence of Xe-Xe covalent bonds and provides insights into the controversy surrounding XeF2, enriching the research on noble gas chemistry under high pressure.
Collapse
Affiliation(s)
- Jie Liu
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Jinming Zhu
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Hongyu Yu
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Zihan Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Gang Wu
- School of Physics and Electronic Engineering, Northeast Petroleum University, Daqing 163318, China
| | - Andong Yao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Lingyun Pan
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Kuo Bao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Tian Cui
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| |
Collapse
|
2
|
Toraille L, Weck G, Geneste G, Pépin C, Garbarino G, Loubeyre P. Ethane under pressure revisited using x-ray diffraction, Raman spectroscopy, infrared absorption, and ab initio calculations up to 150 GPa. J Chem Phys 2024; 160:214702. [PMID: 38828824 DOI: 10.1063/5.0212117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/16/2024] [Indexed: 06/05/2024] Open
Abstract
Ethane (C2H6) is anticipated to be the most stable compound within the carbon-hydrogen system under the 100 GPa pressure range. Nevertheless, the properties of ethane under pressure are still poorly documented. Here, we present a comprehensive study of the structural and vibrational properties of C2H6 in a diamond anvil cell at pressures up to 150 GPa. To obtain detailed data, ethane single-crystal was grown in a helium pressure-transmitting medium. Utilizing single-crystal x-ray diffraction, the distortion mechanism between the tetragonal and monoclinic phases, occurring over the 3.2-5.2 GPa pressure range, is disclosed. Subsequently, no phase transition is observed up to 150 GPa. The accurately measured compression curve is compared to various computational approximations. The vibrational modes measured by Raman spectroscopy and infrared absorption are well identified, and their evolution is well reproduced by ab initio calculations. In particular, an unusual anticrossing phenomenon occurs near 40 GPa between a rocking and a stretching mode, likely attributable to intermolecular interactions through hydrogen bonding.
Collapse
Affiliation(s)
- Loïc Toraille
- CEA DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, 91680 Bruyères-le-Châtel, France
| | - Gunnar Weck
- CEA DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, 91680 Bruyères-le-Châtel, France
| | - Grégory Geneste
- CEA DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, 91680 Bruyères-le-Châtel, France
| | - Charles Pépin
- CEA DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, 91680 Bruyères-le-Châtel, France
| | - Gaston Garbarino
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043 Grenoble Cedex 9, France
| | - Paul Loubeyre
- CEA DAM, DIF, F-91297 Arpajon, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, 91680 Bruyères-le-Châtel, France
| |
Collapse
|
3
|
Bang Y, Hwang H, Liermann HP, Kim DY, He Y, Jeon TY, Shin TJ, Zhang D, Popov D, Lee Y. A role for subducting clays in the water transportation into the Earth's lower mantle. Nat Commun 2024; 15:4428. [PMID: 38789448 PMCID: PMC11126710 DOI: 10.1038/s41467-024-48501-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 04/19/2024] [Indexed: 05/26/2024] Open
Abstract
Subducting sedimentary layer typically contains water and hydrated clay minerals. The stability of clay minerals under such hydrous subduction environment would therefore constraint the lithology and physical properties of the subducting slab interface. Here we show that pyrophyllite (Al2Si4O10(OH)2), one of the representative clay minerals in the alumina-silica-water (Al2O3-SiO2-H2O, ASH) system, breakdowns to contain further hydrated minerals, gibbsite (Al(OH)3) and diaspore (AlO(OH)), when subducts along a water-saturated cold subduction geotherm. Such a hydration breakdown occurs at a depth of ~135 km to uptake water by ~1.8 wt%. Subsequently, dehydration breakdown occurs at ~185 km depth to release back the same amount of water, after which the net crystalline water content is preserved down to ~660 km depth, delivering a net amount of ~5.0 wt% H2O in a phase assemblage containing δ-AlOOH and phase Egg (AlSiO3(OH)). Our results thus demonstrate the importance of subducting clays to account the delivery of ~22% of water down to the lower mantle.
Collapse
Affiliation(s)
- Yoonah Bang
- Department of Earth System Sciences, Yonsei University, Seoul, 03722, Republic of Korea
- Korea Atomic Energy Research Institute (KAERI), Daejeon, 34057, Republic of Korea
| | - Huijeong Hwang
- Photon Sciences, Deutsches Elektronen-Synchrotron (DESY), Hamburg, 22607, Germany
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Hanns-Peter Liermann
- Photon Sciences, Deutsches Elektronen-Synchrotron (DESY), Hamburg, 22607, Germany
| | - Duck Young Kim
- Center for High Pressure Science & Technology Advanced Research, Shanghai, 201203, China
- Division of Advanced Nuclear Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Yu He
- Center for High Pressure Science & Technology Advanced Research, Shanghai, 201203, China
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou, 550081, China
| | - Tae-Yeol Jeon
- Pohang Accelerator Laboratory, POSTECH, Pohang, 37673, Republic of Korea
| | - Tae Joo Shin
- Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Dongzhou Zhang
- Hawaii Institute of Geophysics and Planetology, University of Hawaii at Manoa, Honolulu, HI, 96822, USA
- GSECARS, University of Chicago, Chicago, IL, 60439, USA
| | - Dmitry Popov
- High Pressure Collaborative Access Team, X-ray Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Yongjae Lee
- Department of Earth System Sciences, Yonsei University, Seoul, 03722, Republic of Korea.
| |
Collapse
|
4
|
Handzlik G, Dziubek KF, Hanfland M, Pinkowicz D. Simultaneous manipulation of iron(II) spin crossover and LIESST behaviour using pressure, temperature and light. Dalton Trans 2024; 53:7677-7681. [PMID: 38665047 DOI: 10.1039/d4dt00509k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Spin crossover (SCO) and light-induced excited spin state trapping (LIESST) effects were studied using high pressure X-ray diffraction at cryogenic temperatures on a single crystal of the {[FeII(pyrazole)4]2[NbIV(CN)8]·4H2O}n (FeNb) coordination polymer. The studied compound does not show SCO or LIESST at ambient pressure, but these effects can be enforced by a mechanical stimulus. The obtained results demonstrate the manipulation of the spin state via the appropriate combination of multiple stimuli simultaneously.
Collapse
Affiliation(s)
- Gabriela Handzlik
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
| | - Kamil F Dziubek
- Institut für Mineralogie und Kristallographie, Universität Wien, Josef-Holaubek-Platz 2, A-1090 Wien, Austria
| | - Michael Hanfland
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, CS40220, 38043, Grenoble, Cedex 9, France
| | - Dawid Pinkowicz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
| |
Collapse
|
5
|
Chanyshev A, Martirosyan N, Wang L, Chakraborti A, Purevjav N, Wang F, Kim EJ, Tang H, Fedotenko T, Bhat S, Farla R, Katsura T. Thermal Equation of State of Cubic Silicon Carbide at High Pressures. Chemphyschem 2024; 25:e202300604. [PMID: 38426668 DOI: 10.1002/cphc.202300604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 02/16/2024] [Indexed: 03/02/2024]
Abstract
We have performed in situ X-ray diffraction measurements of cubic silicon carbide (SiC) with a zinc-blende crystal structure (B3) at high pressures and temperatures using multi-anvil apparatus. The ambient volume inferred from the compression curves is smaller than that of the starting material. Using the 3rd-order Birch-Murnaghan equation of state and the Mie-Grüneisen-Debye model, we have determined the thermoelastic parameters of the B3-SiC to be K0=228±3 GPa, K0',=4.4±0.4, q=0.27±0.37, where K0, K0' and q are the isothermal bulk modulus, its pressure derivative and logarithmic volume dependence of the Grüneisen parameter, respectively. Using the 3rd-order Birch-Murnaghan EOS with the thermal expansion coefficient, the thermoelastic parameters have been found as K0=221±3 GPa, K0',=5.2±0.4, α0=0.90±0.02 ⋅ 10-5 ⋅ K-1, where α0 is the thermal expansion coefficient at room pressure and temperature. We have determined that paired B3-SiC - MgO calibrants can be used to estimate pressure and temperature simultaneously in ultrahigh-pressure experiments up to 60 GPa.
Collapse
Affiliation(s)
- Artem Chanyshev
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| | - Naira Martirosyan
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| | - Lin Wang
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| | - Amrita Chakraborti
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| | - Narangoo Purevjav
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| | - Fei Wang
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| | - Eun Jeong Kim
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| | - Hu Tang
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| | - Timofey Fedotenko
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Shrikant Bhat
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Robert Farla
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Tomoo Katsura
- Bayerisches Geoinstitut, University of Bayreuth, Universitätsstraße 30, 95447, Bayreuth, German
| |
Collapse
|
6
|
Pereira ALDJ, Sans JÁ, Gomis Ó, Santamaría-Pérez D, Ray S, Godoy A, da Silva-Sobrinho AS, Rodríguez-Hernández P, Muñoz A, Popescu C, Manjón FJ. Size-Dependent High-Pressure Behavior of Pure and Eu 3+-Doped Y 2O 3 Nanoparticles: Insights from Experimental and Theoretical Investigations. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:721. [PMID: 38668215 PMCID: PMC11054519 DOI: 10.3390/nano14080721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024]
Abstract
We report a joint high-pressure experimental and theoretical study of the structural, vibrational, and photoluminescent properties of pure and Eu3+-doped cubic Y2O3 nanoparticles with two very different average particle sizes. We compare the results of synchrotron X-ray diffraction, Raman scattering, and photoluminescence measurements in nanoparticles with ab initio density-functional simulations in bulk material with the aim to understand the influence of the average particle size on the properties of pure and doped Y2O3 nanoparticles under compression. We observe that the high-pressure phase behavior of Y2O3 nanoparticles depends on the average particle size, but in a different way to that previously reported. Nanoparticles with an average particle size of ~37 nm show the same pressure-induced phase transition sequence on upstroke and downstroke as the bulk sample; however, nanoparticles with an average particle size of ~6 nm undergo an irreversible pressure-induced amorphization above 16 GPa that is completed above 24 GPa. On downstroke, 6 nm nanoparticles likely consist of an amorphous phase.
Collapse
Affiliation(s)
- André Luis de Jesus Pereira
- Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 València, Spain;
- Laboratório de Plasmas e Processos—LPP, Instituto Tecnológico de Aeronáutica—ITA, São José dos Campos 12228-900, Brazil; (A.G.J.); (A.S.d.S.-S.)
| | - Juan Ángel Sans
- Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 València, Spain;
| | - Óscar Gomis
- Centro de Tecnologías Físicas, MALTA Consolider Team, Universitat Politècnica de València, 46022 València, Spain;
| | - David Santamaría-Pérez
- Departament de Física Aplicada-ICMUV, MALTA Consolider Team, Universitat de Valencia, 46100 Burjassot, Spain;
| | - Sudeshna Ray
- Department of Chemistry, Rabindranath Tagore University, Bhopal 464993, Madhya Pradesh, India;
| | - Armstrong Godoy
- Laboratório de Plasmas e Processos—LPP, Instituto Tecnológico de Aeronáutica—ITA, São José dos Campos 12228-900, Brazil; (A.G.J.); (A.S.d.S.-S.)
| | - Argemiro Soares da Silva-Sobrinho
- Laboratório de Plasmas e Processos—LPP, Instituto Tecnológico de Aeronáutica—ITA, São José dos Campos 12228-900, Brazil; (A.G.J.); (A.S.d.S.-S.)
| | - Plácida Rodríguez-Hernández
- Departamento de Física, Instituto de Materiales y Nanotecnología, MALTA Consolider Team, Universidad de La Laguna, 38207 San Cristóbal de La Laguna, Spain; (P.R.-H.); (A.M.)
| | - Alfonso Muñoz
- Departamento de Física, Instituto de Materiales y Nanotecnología, MALTA Consolider Team, Universidad de La Laguna, 38207 San Cristóbal de La Laguna, Spain; (P.R.-H.); (A.M.)
| | - Catalin Popescu
- ALBA-CELLS, MALTA Consolider Team, 08290 Cerdanyola del Valles (Barcelona), Catalonia, Spain;
| | - Francisco Javier Manjón
- Instituto de Diseño para la Fabricación y Producción Automatizada, MALTA Consolider Team, Universitat Politècnica de València, 46022 València, Spain;
| |
Collapse
|
7
|
Wu L, Si J, Guan S, Zhang H, Dou J, Luo J, Yang J, Yu H, Zhang J, Ma X, Yang P, Zhou R, Liu M, Hong F, Yu X. Record-High T_{c} and Dome-Shaped Superconductivity in a Medium-Entropy Alloy TaNbHfZr under Pressure up to 160 GPa. PHYSICAL REVIEW LETTERS 2024; 132:166002. [PMID: 38701470 DOI: 10.1103/physrevlett.132.166002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/06/2024] [Accepted: 03/25/2024] [Indexed: 05/05/2024]
Abstract
Superconductivity has been one of the focal points in medium and high-entropy alloys (MEAs-HEAs) since the discovery of the body-centered cubic (bcc) HEA superconductor in 2014. Until now, the superconducting transition temperature (T_{c}) of most MEA and HEA superconductors has not exceeded 10 K. Here, we report a TaNbHfZr bulk MEA superconductor crystallized in the BCC structure with a T_{c} of 15.3 K which set a new record. During compression, T_{c} follows a dome-shaped curve. It reaches a broad maximum of roughly 15 K at around 70 GPa before decreasing to 9.3 K at 157.2 GPa. First-principles calculations attribute the dome-shaped curve to two competing effects, that is, the enhancement of the logarithmically averaged characteristic phonon frequency ω_{log} and the simultaneous suppression of the electron-phonon coupling constant λ. Thus, TaNbHfZr MEA may have a promising future for studying the underlying quantum physics, as well as developing new applications under extreme conditions.
Collapse
Affiliation(s)
- Liyunxiao Wu
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Jianguo Si
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Shixue Guan
- School of Applied Science, Beijing Information Science and Technology University, Beijing 100192, China
| | - He Zhang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Jie Dou
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Jun Luo
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Jie Yang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Hui Yu
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Jiawei Zhang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaoli Ma
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Pengtao Yang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Rui Zhou
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Miao Liu
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang Hong
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Xiaohui Yu
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| |
Collapse
|
8
|
Hu S, Hamilton SG, Turner CL, Robertson DD, Yan J, Kavner A, Kaner RB, Tolbert SH. High-pressure studies of size dependent yield strength in rhenium diboride nanocrystals. NANOSCALE HORIZONS 2024; 9:646-655. [PMID: 38426307 DOI: 10.1039/d3nh00489a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
The superhard ReB2 system is the hardest pure phase diboride synthesized to date. Previously, we have demonstrated the synthesis of nano-ReB2 and the use of this nanostructured material for texture analysis using high-pressure radial diffraction. Here, we investigate the size dependence of hardness in the nano-ReB2 system using nanocrystalline ReB2 with a range of grain sizes (20-60 nm). Using high-pressure X-ray diffraction, we characterize the mechanical properties of these materials, including bulk modulus, lattice strain, yield strength, and texture. In agreement with the Hall-Petch effect, the yield strength increases with decreasing size, with the 20 nm ReB2 exhibiting a significantly higher yield strength than any of the larger grained materials or bulk ReB2. Texture analysis on the high pressure diffraction data shows a maximum along the [0001] direction, which indicates that plastic deformation is primarily controlled by the basal slip system. At the highest pressure (55 GPa), the 20 nm ReB2 shows suppression of other slip systems observed in larger ReB2 samples, in agreement with its high yield strength. This behavior, likely arises from an increased grain boundary concentration in the smaller nanoparticles. Overall, these results highlight that even superhard materials can be made more mechanically robust using nanoscale grain size effects.
Collapse
Affiliation(s)
- Shanlin Hu
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
| | - Spencer G Hamilton
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
| | - Christopher L Turner
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
| | - Daniel D Robertson
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
| | - Jinyuan Yan
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Abby Kavner
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Richard B Kaner
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
- California NanoSystems Institute (CNSI), University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Sarah H Tolbert
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
- Department of Materials Science and Engineering, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
- California NanoSystems Institute (CNSI), University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| |
Collapse
|
9
|
Dai W, Zou Y, Wang J, Su Y, Zhang D. A First-Principles Study of Mechanical and Electronic Properties of Cr 0.5-xAl 0.5TM xN Hard Coatings (TM = Ti, V, Y, Zr, Hf, and Ta). MATERIALS (BASEL, SWITZERLAND) 2024; 17:1070. [PMID: 38473542 DOI: 10.3390/ma17051070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/11/2024] [Accepted: 02/12/2024] [Indexed: 03/14/2024]
Abstract
The structural, mechanical, and electronic properties of cubic Cr0.5-xAl0.5TMxN, doped with TM (transition metal) elements (TM = Ti, V, Y, Zr, Hf, and Ta) at low concentrations (x = 0.03 and 0.06), was investigated by first-principles calculations. The results of the structural properties calculations reveal that the addition of Ti, Y, Hf, Zr, and Ta expand the volume, while V has the opposite effect. All doped compounds are thermodynamically stable, and Cr0.5-xAl0.5TMxN with TM = Ti is energetically more favorable than other doped compounds. At the same doping concentration, Cr0.5-xAl0.5VxN possesses the highest stiffness, hardness, and resistance to external forces due to its greatest mechanical properties, and Cr0.5-xAl0.5TaxN possesses the highest elastic anisotropy and the lowest Young's modulus. Substituting Cr atoms with TM atoms in a stepwise manner results in a decrease in the bulk modulus, shear modulus, Young's modulus, and theoretical hardness of Cr0.5-xAl0.5TMxN, while increasing its toughness. Based on the calculation results of the total and partial density of states of Cr0.5Al0.5N and Cr0.47Al0.5TM0.03N, all compounds exhibit metallic behavior as indicated by the finite density of states at the Fermi level. The contribution of Ti-3d, V-3d, and Ta-3d orbitals at Fermi level is significantly higher than that of other TM atoms, resulting in a more pronounced metallic character for Cr0.47Al0.5Ti0.03N, Cr0.47Al0.5V0.03N, and Cr0.47Al0.5Ta0.03N.
Collapse
Affiliation(s)
- Weike Dai
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - You Zou
- Information and Network Center, Central South University, Changsha 410083, China
| | - Jiong Wang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Yue Su
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| | - Donglan Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
| |
Collapse
|
10
|
Nayak P, Srivastava P, Gupta DC. Holistic Exploration of Structural, Electronic, Magnetic, Transport, Mechanical, and Thermodynamic Characteristics, Including Curie Temperature Analysis. ACS OMEGA 2023; 8:48113-48129. [PMID: 38144122 PMCID: PMC10734042 DOI: 10.1021/acsomega.3c06694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/19/2023] [Accepted: 11/08/2023] [Indexed: 12/26/2023]
Abstract
Through intricate calculations, the density functional theory (DFT) implemented in the Wien2k code was employed to comprehensively investigate a wide range of material characteristics. Our study encompasses an exhaustive analysis of structural stability, electronic properties, magnetic behaviors, transport phenomena, mechanical responses, and thermodynamic profiles of two notable instances of filled Skutterudites, namely, CeNi4P12 and DyCo4Sb12, which have been thoroughly explored. These computations were performed using the WIEN 2K code, combining local orbitals and the full-potential linearized augmented plane-wave approach. The findings provided insight into the wide range of properties of these materials. In this methodology, the exchange-correlation potential relies on the local-density approximation. We conducted the calculations with and without incorporating spin-orbit interactions. The results obtained provide information about the lattice constant, bulk modulus, and pressure derivative. The stability, as indicated by the P-V graphical plot, suggests that there are no structural phase transitions from the cubic symmetry structure. Notably, our work includes an examination of Curie temperatures, which are pivotal in understanding magnetic phase transitions. The validated elastic properties further support the material's stability and corroborate its ductile nature. These alloys should be considered for spintronic and thermoelectric applications due to their estimated transport characteristics and the observed ductile nature. To enhance our understanding of the thermal stability of antimony-based compounds, we have made reliable estimations of the thermophysical characteristics. By integrating theoretical insights with practical implications, we bridge the gap between fundamental understanding and material design applications. Using DFT in the Wien2k framework, we discover connections and patterns among different properties, showing how to create materials with specific functions and better performance. This approach not only advances our fundamental comprehension of materials but also promises innovation across various technological domains.
Collapse
Affiliation(s)
- Poorva Nayak
- Condensed
Matter Theory Group, School of Studies in Physics, Jiwaji University, Gwalior 474001, India
| | - Pankaj Srivastava
- Atal
Bihari Vajpayee Indian Institute of Information
Technology and Management, Gwalior 474015, India
| | - Dinesh C. Gupta
- Condensed
Matter Theory Group, School of Studies in Physics, Jiwaji University, Gwalior 474001, India
| |
Collapse
|
11
|
Rems E, Anayee M, Fajardo E, Lord RL, Bugallo D, Gogotsi Y, Hu YJ. Computationally Guided Synthesis of MXenes by Dry Selective Extraction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2305200. [PMID: 37587765 DOI: 10.1002/adma.202305200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/07/2023] [Indexed: 08/18/2023]
Abstract
MXenes are a rapidly growing family of 2D transition metal carbides and nitrides that are promising for various applications, including energy storage and conversion, electronics, and healthcare. Hydrofluoric-acid-based etchants are typically used for large-scale and high-throughput synthesis of MXenes, which also leads to a mixture of surface terminations that impede MXene properties. Herein, a computational thermodynamic model with experimental validation is presented to explore the feasibility of fluorine-free synthesis of MXenes with uniform surface terminations by dry selective extraction (DSE) from precursor MAX phases using iodine vapors. A range of MXenes and respective precursor compositions are systematically screened using first-principles calculations to find candidates with high phase stability and low etching energy. A thermodynamic model based on the "CALculation of PHAse Diagrams" (CALPHAD) approach is further demonstrated, using Ti3 C2 I2 as an example, to assess the Gibbs free energy of the DSE reaction and the state of the byproducts as a function of temperature and pressure. Based on the assessment, the optimal synthesis temperature and vapor pressure are predicted and further verified by experiments. This work opens an avenue for scalable, fluorine-free dry synthesis of MXenes with compositions and surface chemistries that are not accessible using wet chemical etching.
Collapse
Affiliation(s)
- Ervin Rems
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
- A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USA
| | - Mark Anayee
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
- A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USA
| | - Eiara Fajardo
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
- A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USA
| | - Robert L Lord
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
- A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USA
| | - David Bugallo
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
- Centro de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química-Física, Universidade de Santiago de Compostela, Santiago de Compostela, 15782, Spain
| | - Yury Gogotsi
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
- A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA, 19104, USA
| | - Yong-Jie Hu
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
| |
Collapse
|
12
|
Ao L, Huang J, Qin F, Li Z, Ideue T, Akhtari K, Chen P, Bi X, Qiu C, Huang D, Chen L, Belosludov RV, Gou H, Ren W, Nojima T, Iwasa Y, Bahramy MS, Yuan H. Valley-dimensionality locking of superconductivity in cubic phosphides. SCIENCE ADVANCES 2023; 9:eadf6758. [PMID: 37683003 PMCID: PMC10491139 DOI: 10.1126/sciadv.adf6758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 08/08/2023] [Indexed: 09/10/2023]
Abstract
Two-dimensional superconductivity is primarily realized in atomically thin layers through extreme exfoliation, epitaxial growth, or interfacial gating. Apart from their technical challenges, these approaches lack sufficient control over the Fermiology of superconducting systems. Here, we offer a Fermiology-engineering approach, allowing us to desirably tune the coherence length of Cooper pairs and the dimensionality of superconducting states in arsenic phosphides AsxP1-x under hydrostatic pressure. We demonstrate how this turns these compounds into tunable two-dimensional superconductors with a dome-shaped phase diagram even in the bulk limit. This peculiar behavior is shown to result from an unconventional valley-dimensionality locking mechanism, driven by a delicate competition between three-dimensional hole-type and two-dimensional electron-type energy pockets spatially separated in momentum space. The resulting dimensionality crossover is further discussed to be systematically controllable by pressure and stoichiometry tuning. Our findings pave a unique way to realize and control superconducting phases with special pairing and dimensional orders.
Collapse
Affiliation(s)
- Lingyi Ao
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210000, China
| | - Junwei Huang
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210000, China
| | - Feng Qin
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210000, China
| | - Zeya Li
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210000, China
| | - Toshiya Ideue
- Quantum-Phase Electronic Center and Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan
- Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
| | - Keivan Akhtari
- Department of Physics, University of Kurdistan, Sanandaj 416, Iran
| | - Peng Chen
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210000, China
| | - Xiangyu Bi
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210000, China
| | - Caiyu Qiu
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210000, China
| | - Dajian Huang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Long Chen
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | | | - Huiyang Gou
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Wencai Ren
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Tsutomu Nojima
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Yoshihiro Iwasa
- Quantum-Phase Electronic Center and Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
| | - Mohammad Saeed Bahramy
- Department of Physics and Astronomy, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Hongtao Yuan
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210000, China
| |
Collapse
|
13
|
Zhang H, Wu B, Liu J, Liu Z, Boi FS, He D, Irifune T, Lei L. High-Pressure Coupling Reactions to Produce a Spherical Bulk Re xN/Fe 3N Composite. Inorg Chem 2023; 62:6263-6273. [PMID: 37032490 DOI: 10.1021/acs.inorgchem.2c04089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
We report a novel high-pressure coupling (HPC) reaction that couples the nitridation of Re with high-pressure solid-state metathesis (HPSSM) of Fe3N to produce a spherical bulk RexN/Fe3N composite. Compared with conventional methods, upon coupling of the HPSSM reactions, the synthetic pressure for Re nitridation was successfully reduced from 13 to 10 GPa (for Re3N) and from 20 to 15 GPa (for Re2N). The product RexN species would be surrounded by product Fe3N, resulting in a spherical bulk RexN/Fe3N composite (x = 2 or 3). The composite exhibits a soft magnetic behavior, and the content of nitrogen in RexN (x = 2 or 3) was controlled by adjusting the P-T conditions. The HPC reaction establishes a new approach for the bulk synthesis of 5d transition metal nitride.
Collapse
Affiliation(s)
- Hengyuan Zhang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Binbin Wu
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Jingyi Liu
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Zhaodong Liu
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Filippo S Boi
- College of Physics, Sichuan University, Chengdu 610065, China
| | - Duanwei He
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Tetsuo Irifune
- Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan
| | - Li Lei
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| |
Collapse
|
14
|
Zhang P, Gao D, Tang X, Yang X, Zheng H, Wang Y, Wang X, Xu J, Wang Z, Liu J, Wang X, Ju J, Tang M, Dong X, Li K, Mao HK. Ordered Van der Waals Hetero-nanoribbon from Pressure-Induced Topochemical Polymerization of Azobenzene. J Am Chem Soc 2023; 145:6845-6852. [PMID: 36926877 DOI: 10.1021/jacs.2c13753] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Pressure-induced topochemical polymerization of molecular crystals with various stackings is a promising way to synthesize materials with different co-existing sub-structures. Here, by compressing the azobenzene crystal containing two kinds of intermolecular stacking, we synthesized an ordered van der Waals carbon nanoribbon (CNR) heterostructure in one step. Azobenzene polymerizes via a [4 + 2] hetero-Diels-Alder (HDA) reaction of phenylazo-phenyl in layer A and a para-polymerization reaction of phenyl in layer B at 18 GPa, as evidenced by in situ Raman and IR spectroscopies, X-ray diffraction, as well as gas chromatography-mass spectrometry and the solid-state nuclear magnetic resonance of the recovered products. The theoretical calculation shows that the obtained CNR heterostructure has a type II (staggered) band gap alignment. Our work highlights a high-pressure strategy to synthesize bulk CNR heterostructures.
Collapse
Affiliation(s)
- Peijie Zhang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Dexiang Gao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Xingyu Tang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Xin Yang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Haiyan Zheng
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Yida Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Xuan Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Jingqin Xu
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Zijia Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Jie Liu
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Xiaoge Wang
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China
| | - Jing Ju
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China
| | - Mingxue Tang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Xiao Dong
- Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Kuo Li
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100193, People's Republic of China
| |
Collapse
|
15
|
Ma Y, Chen Y, Sun M, Zhang Y. Physicochemical Properties of High-Entropy Oxides. CHEM REC 2023; 23:e202200195. [PMID: 36328765 DOI: 10.1002/tcr.202200195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/28/2022] [Indexed: 11/06/2022]
Abstract
The development of industry has triggered an increasingly severe demand for new functional materials. In recent years, researches on high-entropy oxides (HEOs) are more comprehensive and in-depth, and their fascinating properties are gradually known to the public. The unique elemental synergistic effect and lattice distortion endow the high-entropy family with various untapped potential, and wide application fields and outstanding performance of HEOs make them candidates for future materials. In this review, the concept, structure, and synthesis of HEOs are firstly highlighted. Secondly, a variety of excellent properties and applications in the fields of mechanics, electrics, thermotics, optics and magnetics are summarized. This work provides a comprehensive overview about HEOs, facilitating the development of modern functionalities of the high-entropy family.
Collapse
Affiliation(s)
- Yue Ma
- Institute of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, 721016, Shaanxi, P. R. China
| | - Yichuan Chen
- School of Mathematics and Physics, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R China
| | - Mengtao Sun
- School of Mathematics and Physics, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R China
| | - Yun Zhang
- Institute of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, 721016, Shaanxi, P. R. China
| |
Collapse
|
16
|
Materzanini G, Chiarotti T, Marzari N. Solids that are also liquids: elastic tensors of superionic materials. NPJ COMPUTATIONAL MATERIALS 2023; 9:10. [PMID: 38666054 PMCID: PMC11041723 DOI: 10.1038/s41524-022-00948-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 12/10/2022] [Indexed: 04/28/2024]
Abstract
Superionics are fascinating materials displaying both solid- and liquid-like characteristics: as solids, they respond elastically to shear stress; as liquids, they display fast-ion diffusion at normal conditions. In addition to such scientific interest, superionics are technologically relevant for energy, electronics, and sensing applications. Characterizing and understanding their elastic properties is, e.g., urgently needed to address their feasibility as solid-state electrolytes in all-solid-state batteries. However, static approaches to elasticity assume well-defined reference positions around which atoms vibrate, in contrast with the quasi-liquid motion of the mobile ions in fast ionic conductors. Here, we derive the elastic tensors of superionics from ensemble fluctuations in the isobaric-isothermal ensemble, exploiting extensive Car-Parrinello simulations. We apply this approach to paradigmatic Li-ion conductors, and complement with a block analysis to compute statistical errors. Static approaches sampled over the trajectories often overestimate the response, highlighting the importance of a dynamical treatment in determining elastic tensors in superionics.
Collapse
Affiliation(s)
- Giuliana Materzanini
- Theory and Simulations of Materials (THEOS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- National Centre for Computational Design and Discovery of Novel Materials (MARVEL), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- Present Address: Institute of Condensed Matter and Nanosciences, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium
| | - Tommaso Chiarotti
- Theory and Simulations of Materials (THEOS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- National Centre for Computational Design and Discovery of Novel Materials (MARVEL), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Nicola Marzari
- Theory and Simulations of Materials (THEOS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- National Centre for Computational Design and Discovery of Novel Materials (MARVEL), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| |
Collapse
|
17
|
Zhuravlev Y, Atuchin V. Chemical Bonding Effects and Physical Properties of Noncentrosymmetric Hexagonal Fluorocarbonates ABCO3F (A: K, Rb, Cs; B: Mg, Ca, Sr, Zn, Cd). Molecules 2022; 27:molecules27206840. [PMID: 36296432 PMCID: PMC9607192 DOI: 10.3390/molecules27206840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 09/30/2022] [Accepted: 10/06/2022] [Indexed: 12/03/2022] Open
Abstract
The present work applied the methods of density functional theory and the van der Waals interaction PBE + D3(BJ) on the basis of localized orbitals of the CRYSTAL17 package. It featured the effect of interactions between structural elements of fluorocarbonates ABCO3F (A: K, Rb, Cs; B: Mg, Ca, Sr, Zn, Cd) on their elastic and vibrational properties. The hexagonal structures proved to consist of alternating ···B-CO3··· and ···A-F··· layers in planes ab, interconnected along axis c by infinite chains ···F-B-F···, where cations formed polyhedra AOnF3 and BOmF2. The calculations included the band energy structure, the total and partial density of electron states, the energy and band widths of the upper ns- and np-states of alkali and alkaline-earth metals, as well as nd-zinc and nd-cadmium. For hydrostatic compression, we calculated the parameters of the Birch–Murnaghan equation of state and the linear compressibility moduli along the crystal axes and bond lines. We also defined the elastic constants of single crystals to obtain the Voigt–Reuss–Hill approximations for the elastic moduli of polycrystalline materials. The study also revealed the relationship between the elastic properties and the nature of the chemical bond. Hybrid functional B3LYP made it possible to calculate the modes of normal long-wavelength oscillations, which provided the spectra of infrared absorption and Raman scattering. Intramolecular modes ν1 and ν4 with one or two maxima were found to be intense, and their relative positions depended on the lengths of nonequivalent C–O bonds.
Collapse
Affiliation(s)
- Yuri Zhuravlev
- Department of General and Experimental Physics, Kemerovo State University, 650000 Kemerovo, Russia
| | - Victor Atuchin
- Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, 630090 Novosibirsk, Russia
- Department of Applied Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
- Research and Development Department, Kemerovo State University, 650000 Kemerovo, Russia
- Department of Industrial Machinery Design, Novosibirsk State Technical University, 630073 Novosibirsk, Russia
- R&D Center “Advanced Electronic Technologies”, Tomsk State University, 634034 Tomsk, Russia
- Correspondence: ; Tel.: +7-(383)-330-8889
| |
Collapse
|
18
|
Diamond MR, Shen G, Popov DY, Park C, Jacobsen SD, Jeanloz R. Electron Density Changes across the Pressure-Induced Iron Spin Transition. PHYSICAL REVIEW LETTERS 2022; 129:025701. [PMID: 35867445 DOI: 10.1103/physrevlett.129.025701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 08/02/2021] [Accepted: 12/14/2021] [Indexed: 06/15/2023]
Abstract
High-pressure single-crystal x-ray diffraction is used to experimentally map the electron-density distribution changes in (Fe,Mg)O as ferrous iron undergoes a pressure-induced transition from high- to low-spin states. As the bulk density and elasticity of magnesiowüstite-one of the dominant mineral phases of Earth's mantle-are affected by this electronic transition, our results have applications to geophysics as well as to validating first-principles calculations. The observed changes in diffraction intensities indicate a spin-transition-induced change in orbital occupancies of the Fe ion in general accord with crystal-field theory, illustrating the use of electron density measurements for characterizing high-pressure d-block chemistry and motivating further studies characterizing chemical bonding under pressure.
Collapse
Affiliation(s)
- Matthew R Diamond
- Department of Earth and Planetary Science, University of California, Berkeley, California 94720, USA
| | - Guoyin Shen
- HPCAT, X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Dmitry Y Popov
- HPCAT, X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Changyong Park
- HPCAT, X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Steven D Jacobsen
- Department of Earth and Planetary Sciences, Northwestern University, Evanston, Illinois 60208, USA
| | - Raymond Jeanloz
- Department of Earth and Planetary Science, University of California, Berkeley, California 94720, USA
| |
Collapse
|
19
|
Chen B, Tian M, Zhang J, Li B, Xiao Y, Chow P, Kenney-Benson C, Deng H, Zhang J, Sereika R, Yin X, Wang D, Hong X, Jin C, Bi Y, Liu H, Liu H, Li J, Jin K, Wu Q, Chang J, Ding Y, Mao HK. Novel Valence Transition in Elemental Metal Europium around 80 GPa. PHYSICAL REVIEW LETTERS 2022; 129:016401. [PMID: 35841573 DOI: 10.1103/physrevlett.129.016401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 04/21/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Valence transition could induce structural, insulator-metal, nonmagnetic-magnetic and superconducting transitions in rare-earth metals and compounds, while the underlying physics remains unclear due to the complex interaction of localized 4f electrons as well as their coupling with itinerant electrons. The valence transition in the elemental metal europium (Eu) still has remained as a matter of debate. Using resonant x-ray emission scattering and x-ray diffraction, we pressurize the states of 4f electrons in Eu and study its valence and structure transitions up to 160 GPa. We provide compelling evidence for a valence transition around 80 GPa, which coincides with a structural transition from a monoclinic (C2/c) to an orthorhombic phase (Pnma). We show that the valence transition occurs when the pressure-dependent energy gap between 4f and 5d electrons approaches the Coulomb interaction. Our discovery is critical for understanding the electrodynamics of Eu, including magnetism and high-pressure superconductivity.
Collapse
Affiliation(s)
- Bijuan Chen
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Mingfeng Tian
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Jurong Zhang
- Shandong Provincial Engineering and Technical Center of Light Manipulations and Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Bing Li
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Yuming Xiao
- HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Paul Chow
- HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Curtis Kenney-Benson
- HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Hongshan Deng
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Jianbo Zhang
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Raimundas Sereika
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Xia Yin
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Dong Wang
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Xinguo Hong
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Changqing Jin
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Yan Bi
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Hanyu Liu
- International Center for Computational Method and Software, College of Physics, Jilin University, Changchun 130012, China
| | - Haifeng Liu
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Jun Li
- National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China
| | - Ke Jin
- National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China
| | - Qiang Wu
- National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China
| | - Jun Chang
- College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
| | - Yang Ding
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Ho-Kwang Mao
- Center for High-Pressure Science and Technology Advanced Research, Beijing 100094, China
| |
Collapse
|
20
|
Deng W, Zhen J, Huang Q, Wang Y, Dong H, Wan S, Zhang S, Feng J, Chen B. Pressure-Quenched Superconductivity in Weyl Semimetal NbP Induced by Electronic Phase Transitions under Pressure. J Phys Chem Lett 2022; 13:5514-5521. [PMID: 35696320 DOI: 10.1021/acs.jpclett.2c01266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The TaAs family (NbAs, TaAs, NbP, TaP) are kinds of Weyl semimetals with lots of novel properties, thus attracting considerable attention in recent years. Here, we systematically studied the Weyl semimetal NbP up to 72 GPa through the resistivity, Raman spectra, X-ray diffraction measurements, and first-principles density functional theory (DFT) calculations. A pressure-induced semimetal-metal transition was observed at ∼36 GPa, which was further confirmed by the DFT calculations. With further compression up to 52 GPa, a superconducting state was observed. Interestingly, the Tc increases significantly upon decompression and shows a dome-shaped trend as a function of pressure. Surprisingly, the pressure-induced superconductivity can be quenched to ambient pressure, and all transitions under pressure do not involve any structural change. Our work not only depicts a phase diagram of the NbP system under high pressure but also provides a new experimental insight for superconductivity in Weyl semimetals.
Collapse
Affiliation(s)
- Wen Deng
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, People's Republic of China
| | - Jiapeng Zhen
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, People's Republic of China
| | - Qiushi Huang
- Beijing Computational Science Research Center, Beijing 100093, People's Republic of China
| | - Yanju Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, People's Republic of China
| | - Hongliang Dong
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, People's Republic of China
| | - Shun Wan
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, People's Republic of China
| | - Shihui Zhang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, People's Republic of China
| | - Jiajia Feng
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, People's Republic of China
| | - Bin Chen
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, People's Republic of China
| |
Collapse
|
21
|
Karaouzène LI, Ouahrani T, Morales-García Á, Errandonea D. Theoretical calculations of the effect of nitrogen substitution on the structural, vibrational, and electronic properties of wolframite-type ScTaO 4 at ambient conditions. Dalton Trans 2022; 51:3642-3651. [PMID: 35156980 DOI: 10.1039/d1dt04369b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, the effect of nitrogen substitution in wolframite-type ScTaO4 was investigated using density-functional theory calculations. First, structural and mechanical properties, as well as the dynamical stability of ScTaO4 were examined deeply for the ambient-pressure structure. Subsequently, we studied how lattice vibrations are affected by hydrostatic pressure and determined the elastic moduli of ScTaO4. The results of our study show that the monoclinic structure of ScTaO4 is rigid and non-compressible. In addition, band-structure calculations show that ScTaO4 has a wide direct band-gap of 4.04 eV, which in turn leads to a possible tuning of electronic properties. We have found that this task can be conducted by partially substituting oxygen atoms in the unit cell with nitrogen atoms. Both band-structure calculations and charge-density analyses revealed a narrowing in the band gap caused by the presence of nitrogen atoms, which act as a shallow acceptor state, resulting in weak repulsive interactions and structural distortions in both Sc and Ta coordination polyhedra; reducing the crystal symmetry from monoclinic to triclinic.
Collapse
Affiliation(s)
- Lotfi Ibrahim Karaouzène
- Laboratoire de Physique Théorique, Université de Tlemcen, BP 119, 13000, Algeria. .,Département de Physique - Faculté des Sciences - Université de Tlemcen, BP 119, 13000, Algeria
| | - Tarik Ouahrani
- Laboratoire de Physique Théorique, Université de Tlemcen, BP 119, 13000, Algeria.
| | - Ángel Morales-García
- Departament de Ciéncia de Materials i Química Física & Institut de Química Teórica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Daniel Errandonea
- Departamento de Física Aplicada - Instituto de Ciencia de Materiales, Matter at High Pressure (MALTA) Consolider Team, Universidad de Valencia, Edificio de Investigación, C/Dr. Moliner 50, Burjassot, 46100, Valencia, Spain.
| |
Collapse
|
22
|
Van On V, Guerrero-Sanchez J, Ponce-Pérez R, Rivas-Silva JF, Cocoletzi GH, Hoat DM. Ferromagnetic half-metallicity of the cubic NaMgO 3 perovskite: from bulk to (001) surfaces. Phys Chem Chem Phys 2022; 24:2209-2218. [PMID: 35013741 DOI: 10.1039/d1cp05086a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Exploration of new half-metallic materials for spintronic applications has drawn great attention from researchers. In this work, we investigate the structural, electronic, and magnetic properties of the NaMgO3 perovskite in the bulk and (001) surface conformations. The results show the half-metallic nature of bulk NaMgO3 generated by insulator spin-up channels with a large band gap of 6.08 eV and metallic spin-down channels. A total magnetic moment of 3 (μB) is obtained, which is produced mainly by O atoms with a local magnetic moment of 0.94 (μB). Once the bulk is cleaved along the (001) direction, atomic relaxation takes place to reach an equilibrium, where all constituent atoms exhibit an inward movement. Interestingly, the half-metallicity is retained from the bulk to the (001) surface conformation. The effects of slab termination and thickness on the surface energy, stability, band edges, spin-up energy gaps, and magnetic anisotropy will be also analyzed in detail. The results presented herein introduce the NaMgO3 perovskite as a promising half-metallic material to generate spin current in spintronic devices.
Collapse
Affiliation(s)
- Vo Van On
- Group of Computational Physics and Simulation of Advanced Materials, Institute of Applied Technology, Thu Dau Mot University, Binh Duong Province, Vietnam
| | - J Guerrero-Sanchez
- Universidad Nacional Autónoma de México, Centro de Nanociencias y Nanotecnología, Apartado Postal 14, Ensenada, Baja California, Código Postal 22800, Mexico
| | - R Ponce-Pérez
- Universidad Nacional Autónoma de México, Centro de Nanociencias y Nanotecnología, Apartado Postal 14, Ensenada, Baja California, Código Postal 22800, Mexico
| | - J F Rivas-Silva
- Benemérita Universidad Autónoma de Puebla, Instituto de Física, Apartado Postal J-48, Puebla 72570, Mexico
| | - Gregorio H Cocoletzi
- Benemérita Universidad Autónoma de Puebla, Instituto de Física, Apartado Postal J-48, Puebla 72570, Mexico
| | - D M Hoat
- Institute of Theoretical and Applied Research, Duy Tan University, Ha Noi 100000, Vietnam. .,Faculty of Natural Sciences, Duy Tan University, Da Nang 550000, Vietnam
| |
Collapse
|
23
|
Vu TV, Nguyen DK, Guerrero-Sanchez J, Rivas-Silva JF, Cocoletzi GH, Hoat DM. A new family of NaTMGe (TM = 3d transition metals) half-Heusler compounds: the role of TM modification. RSC Adv 2022; 12:26418-26427. [PMID: 36275110 PMCID: PMC9479169 DOI: 10.1039/d2ra02983a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/21/2022] [Indexed: 11/21/2022] Open
Abstract
Exploring Heusler based materials for different practical applications has drawn more and more attention. In this work, the structural, electronic, magnetic, and mechanical properties of NaTMGe (TM = all 3d transition metals) half-Heusler compounds have been systematically investigated using first-principles calculations. The TM modification plays a determinant role in the fundamental properties. Except NaNiGe and NaCuGe, the studied materials exhibit good dynamical stability. Calculations reveal the non-magnetic semiconductor of NaScGe with a direct energy gap of 1.21 eV. Prospective spintronic applications of NaVGe and NaCrGe–NaMnGe are also suggested by their magnetic semiconductor and half-metallic behavior, respectively, where their magnetic properties follow the Slater–Pauling rule. Nevertheless, the remaining materials are either magnetic or non-magnetic metallic. For the magnetic systems, the magnetism is induced mainly by the TM constituents with either spin-up (V, Cr, Mn, and Fe) or spin-down (Co) 3d states. Calculated elastic constants indicate that all compounds are mechanically stable. Furthermore, they exhibit significant elastic anisotropy, where NaScGe and NaZnGe are the least and most anisotropic materials, respectively. Also, modifying the TM elements influences the materials’ ductile and brittle behaviors. Our work unravels clearly the effects of TM modification on the fundamental properties of NaTMGe compounds. NaTMGe materials show excellent versatility with promising properties for optoelectronic and spintronic applications. Band structures of NaTMGe half-Heusler compounds.![]()
Collapse
Affiliation(s)
- Tuan V. Vu
- Laboratory for Computational Physics, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Vietnam
- Faculty of Mechanical - Electrical and Computer Engineering, Van Lang University, Ho Chi Minh City, Vietnam
| | - Duy Khanh Nguyen
- High-Performance Computing Lab (HPC Lab), Information Technology Center, Thu Dau Mot University, Binh Duong Province, Vietnam
| | - J. Guerrero-Sanchez
- Universidad Nacional Autónoma de México, Centro de Nanociencias y Nanotecnología, Apartado Postal 14, Ensenada, Baja California, Código Postal 22800, Mexico
| | - J. F. Rivas-Silva
- Benemérita Universidad Autónoma de Puebla, Instituto de Física, Apartado Postal J-48, Puebla 72570, Mexico
| | - Gregorio H. Cocoletzi
- Benemérita Universidad Autónoma de Puebla, Instituto de Física, Apartado Postal J-48, Puebla 72570, Mexico
| | - D. M. Hoat
- Institute of Theoretical and Applied Research, Duy Tan University, Ha Noi 100000, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Da Nang 550000, Vietnam
| |
Collapse
|
24
|
Li W, Feng J, Zhang X, Li C, Dong H, Deng W, Liu J, Tian H, Chen J, Jiang S, Sheng H, Chen B, Zhang H. Metallization and Superconductivity in the van der Waals Compound CuP 2Se through Pressure-Tuning of the Interlayer Coupling. J Am Chem Soc 2021; 143:20343-20355. [PMID: 34813695 DOI: 10.1021/jacs.1c09735] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Emergent layered Cu-bearing van der Waals (vdW) compounds have great potentials for use in electrocatalysis, lithium batteries, and electronic and optoelectronic devices. However, many of their alluring properties such as potential superconductivity remain unknown. In this work, using CuP2Se as a model compound, we explored its electrical transport and structural evolution at pressures up to ∼60 GPa using both experimental determinations and ab initio calculations. We found that CuP2Se undergoes a semiconductor-to-metal transition at ∼20 GPa at room temperature and a metal-to-superconductor transition at 3.3-5.7 K in the pressure range from 27.0 to 61.4 GPa. At ∼10 and 20 GPa, there are two isostructural changes in the compound, corresponding to, respectively, the emergence of the interlayer coupling and start of interlayer atomic bonding. At a pressure between 35 and 40 GPa, the vdW layers start to slide and then merge, forming a new phase with high coordination numbers. We also found that the Bardeen-Cooper-Schrieffer (BCS) theory describes quite well the pressure dependence of the critical temperature despite occurrence of a possible medium-to-strong electron-phonon coupling, revealing the determinant roles of the enhanced bulk modulus and electron density of states at high pressure. Moreover, nanosizing of CuP2Se at high pressure further increased the critical temperature even at sizes approaching the Anderson limit. These findings would have important implications for developing novel applications of layered vdW compounds through simple pressure tuning of the interlayer coupling.
Collapse
Affiliation(s)
- Weiwei Li
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Jiajia Feng
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Xiaoliang Zhang
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Cong Li
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Hongliang Dong
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Wen Deng
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Junxiu Liu
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Hua Tian
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Jian Chen
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Sheng Jiang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Hongwei Sheng
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Bin Chen
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Hengzhong Zhang
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| |
Collapse
|
25
|
Stavrou E, Maryewski AA, Lobanov SS, Oganov AR, Konôpková Z, Prakapenka VB, Goncharov AF. Ethane and methane at high pressures: Structure and stability. J Chem Phys 2021; 155:184503. [PMID: 34773959 DOI: 10.1063/5.0067828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We have performed a combined experimental and theoretical study of ethane and methane at high pressures of up to 120 GPa at 300 K using x-ray diffraction and Raman spectroscopies and the USPEX ab initio evolutionary structural search algorithm, respectively. For ethane, we have determined the crystallization point, for room temperature, at 2.7 GPa and also the low pressure crystal structure (phase A). This crystal structure is orientationally disordered (plastic phase) and deviates from the known crystal structures for ethane at low temperatures. Moreover, a pressure induced phase transition has been identified, for the first time, at 13.6 GPa to a monoclinic phase B, the structure of which is solved based on good agreement with the experimental results and theoretical predictions. For methane, our x-ray diffraction measurements are in agreement with the previously reported high-pressure structures and equation of state (EOS). We have determined the EOSs of ethane and methane, which provides a solid basis for the discussion of their relative stability at high pressures.
Collapse
Affiliation(s)
- Elissaios Stavrou
- Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA
| | - Alexander A Maryewski
- Skolkovo Institute of Science and Technology, 3 Nobel St., Moscow 143026, Russian Federation
| | - Sergey S Lobanov
- Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA
| | - Artem R Oganov
- Skolkovo Institute of Science and Technology, 3 Nobel St., Moscow 143026, Russian Federation
| | | | - Vitali B Prakapenka
- Center for Advanced Radiation Sources, University of Chicago, Chicago, Illinois 60637, USA
| | - Alexander F Goncharov
- Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA
| |
Collapse
|
26
|
|
27
|
Li W, Wang P, Xu C, Tang H, Ren P, Xie Z, Zhou X, Chen J, Wang S, Han S, Zhao Y, Wang L. High-Pressure and High-Temperature Synthesis and In Situ High-Pressure Synchrotron X-ray Diffraction Study of HfSi 2. Inorg Chem 2021; 60:15215-15222. [PMID: 34612630 DOI: 10.1021/acs.inorgchem.1c01681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
High-quality hafnium disilicide (HfSi2) has been successfully synthesized using a high-pressure and high-temperature (HPHT) method at 3 GPa and 1573 K in a DS6 × 10 MN cubic press. The modest synthesis temperature is aided by significant decreases in both liquidus and solidus temperatures at high pressure for the Si-rich portion of the Hf-Si binary system. The in situ high-pressure X-ray diffraction study yielded a bulk modulus of B0 = 124.4 ± 0.8 GPa with a fixed B0' = 4.0 for HfSi2, which exhibits a dramatically anisotropic compressibility, with a and c axes nearly twice as incompressible as the b axis. The bulk HfSi2 as synthesized has a Vickers hardness of 6.9 ± 0.1 GPa and high thermal stability of 1163 K in air, indicating its hard and refractory ceramic properties. The core-level XPS data of Hf 4f and Si 2p have been collected on the bulk samples of HfSi2, HfSi, and Hf, as well as Si powder to examine the Hf-Si bonding in hafnium silicides. The Hf 4f7/2 binding energies are 15.0 and 14.8 eV for bulk HfSi2 and HfSi, respectively.
Collapse
Affiliation(s)
- Weiwei Li
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Pei Wang
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China.,Department of Physics, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Chao Xu
- College of Science, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Hu Tang
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Peng Ren
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Zhiqing Xie
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Xuefeng Zhou
- Department of Physics, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Jian Chen
- Department of Physics, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Shanmin Wang
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China.,Department of Physics, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Songbai Han
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Yusheng Zhao
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China.,Department of Physics, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| | - Liping Wang
- Academy for Advanced Interdisciplinary Studies and Shenzhen Engineering Research Center for Frontier Materials Synthesis at High Pressures, Southern University of Science and Technology, Shenzhen 518055, P. R. China
| |
Collapse
|
28
|
Matar SF, Solozhenko VL. Ultra-hard rhombohedral carbon by crystal chemistry and ab initio investigations. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122354] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
29
|
Gao D, Tang X, Wang X, Yang X, Zhang P, Che G, Han J, Hattori T, Wang Y, Dong X, Zheng H, Li K, Mao HK. Phase transition and chemical reactivity of 1H-tetrazole under high pressure up to 100 GPa. Phys Chem Chem Phys 2021; 23:19503-19510. [PMID: 34524305 DOI: 10.1039/d1cp02913d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pressure-induced phase transition and polymerization of nitrogen-rich molecules are widely focused on due to their extreme importance for the development of green high-energy-density materials. Here, we present a study of the phase-transition behaviour and chemical reaction of 1H-tetrazole up to 100 GPa using in situ Raman, IR, X-ray diffraction, neutron diffraction techniques and theoretical calculations. A phase transition above 2.6 GPa was identified and the high-pressure structure was determined with one molecule in a unit cell instead of two molecules as reported before. The 1H-tetrazole polymerized reversibly below 100 GPa, probably through carbon-nitrogen bonding instead of nitrogen-nitrogen bonding. Our studies update the structure model of the high-pressure phase of 1H-tetrazole, and present the possible intermolecular bonding route for the first time, which gives new insights to understand the phase transition and chemical reaction of nitrogen-rich compounds, and is of benefit for designing new high-energy-density materials.
Collapse
Affiliation(s)
- Dexiang Gao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Xingyu Tang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Xuan Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Xin Yang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Peijie Zhang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Guangwei Che
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Jun Han
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Takanori Hattori
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Yajie Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Xiao Dong
- Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, P. R. China
| | - Haiyan Zheng
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Kuo Li
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China.
| |
Collapse
|
30
|
Wang J, Wang L, Wang F, Jiang S, Guo H. Pressure-induced bandgap engineering of lead-free halide double perovskite (NH 4) 2SnBr 6. Phys Chem Chem Phys 2021; 23:19308-19312. [PMID: 34524306 DOI: 10.1039/d1cp03267d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lead-free halide double perovskites (HDPs) have recently been proposed as potential stable and environment-friendly alternatives to lead-based halide perovskites. Bandgap engineering plays a vital role in the optoelectronic applications of HDP materials. In this study, methods combining high-pressure techniques with density functional theory calculations were employed to implement the bandgap engineering of a classic HDP-based (NH4)2SnBr6. Under high pressure, (NH4)2SnBr6 exhibits a redshift of the bandgap with increasing pressure up to 6.3 GPa and a sudden blueshift up to 20.2 GPa, followed by a redshift at higher pressures, which is relevant to the cubic-tetragonal phase transition, direct-indirect transition, and amorphization, respectively. Our results enrich the understanding of the structural-optical properties of (NH4)2SnBr6 and reveal the special role of NH4+ cations in pressure-induced bandgap engineering, thus providing important information for application in optoelectronic devices and helping to design ideal materials with higher efficiency.
Collapse
Affiliation(s)
- Jiaxiang Wang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
| | - Lingrui Wang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.
| | - Fei Wang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China. .,International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Sheng Jiang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Haizhong Guo
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China. .,Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan, Shandong 250358, China
| |
Collapse
|
31
|
Li Y, Tang X, Zhang P, Wang Y, Yang X, Wang X, Li K, Wang Y, Wu N, Tang M, Xiang J, Lin X, Lee HH, Dong X, Zheng H, Mao HK. Scalable High-Pressure Synthesis of sp 2-sp 3 Carbon Nanoribbon via [4 + 2] Polymerization of 1,3,5-Triethynylbenzene. J Phys Chem Lett 2021; 12:7140-7145. [PMID: 34297574 DOI: 10.1021/acs.jpclett.1c01945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Pressure-induced polymerization of aromatics is an effective method to construct extended carbon materials, including the diamond-like nanothread and graphitic structures, but the reaction pressure of phenyl is typically around 20 GPa and too high to be applied for large-scale preparation. Here by introducing ethynyl to phenyl, we obtained a sp2-sp3 carbon nanoribbon structure by compressing 1,3,5-triethynylbenzene (TEB), and the reaction pressure of phenyl was successfully decreased to 4 GPa, which is the lowest reaction pressure of aromatics at room temperature. Using experimental and theoretical methods, we figured out that the ethynylphenyl of TEB undergoes [4 + 2] dehydro-Diels-Alder (DDA) reaction with phenyl upon compression at an intermolecular C···C distance above 3.3 Å, which is much longer than those of benzene and acetylene. Our research suggested that the DDA reaction between ethynylphenyl and phenyl is a promising route to decrease the reaction pressure of aromatics, which allows the scalable high-pressure synthesis of nanoribbon materials.
Collapse
Affiliation(s)
- Yapei Li
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Xingyu Tang
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Peijie Zhang
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Yida Wang
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Xin Yang
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Xuan Wang
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Kuo Li
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Yajie Wang
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Ningning Wu
- Center for Physicochemical Analysis and Measurement, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Mingxue Tang
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Junfeng Xiang
- Center for Physicochemical Analysis and Measurement, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaohuan Lin
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Hyun Hwi Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Republic of Korea
| | - Xiao Dong
- Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, China
| | - Haiyan Zheng
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research, 10 Xibeiwang East Road, Haidian, Beijing 100094, China
| |
Collapse
|
32
|
Tang Y, Liang H, Guan S, Huang M, Wang W, Wang Q, He D, Peng F. Elucidating the Phase Transformation and Metallization Behavior of Zinc Phosphide under High Pressure. Inorg Chem 2021; 60:10315-10322. [PMID: 34176259 DOI: 10.1021/acs.inorgchem.1c00789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Among the family of II3V2-type compounds, zinc phosphide (Zn3P2) occupies a unique position. As one of the most promising semiconductors well-suited for photovoltaic applications, Zn3P2 has attracted considerable attention. The stability of its structure and properties are of great interest and importance for science and technology. Here, we systematically investigate the pressurized behavior of Zn3P2 using in situ synchrotron radiation angle-dispersive X-ray diffraction (ADXRD) and in situ electrical resistance measurement under high pressure. The ADXRD experiment shows that Zn3P2 undergoes an irreversible structural phase transition under high pressure, beginning at 11.0 GPa and being completed at ∼17.7 GPa. Consistently, the high-pressure electrical resistance measurement reveals a pressure-induced semiconductor-metal transition for Zn3P2 near 11.0 GPa. The kinetics of the phase transition is also studied using in situ electrical resistance measurement and can be well described by the classical Avrami model. What's more, the new high-pressure structure of Zn3P2 is refined to be orthorhombic with space group Pmmn; the lattice parameters and bulk modulus of this high-pressure phase are determined as a = 3.546 Å, b = 5.004 Å, c = 3.167 Å, and B0 = 126.3 GPa. Interestingly, we also predict a possible structural phase transformation of orthorhombic phase (Pmmn) to cubic phase (P4232) during the decompression process; this cubic Zn3P2 is metastable at ambient conditions. These experimental results reveal the unexpected high-pressure structural behaviors and electrical properties of Zn3P2, which could help to promote the further understanding and the future applications of Zn3P2 as well as other II3V2 compounds.
Collapse
Affiliation(s)
- Yue Tang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China
| | - Hao Liang
- School of Science, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Shixue Guan
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China
| | - Mengyang Huang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China
| | - Wenqiang Wang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China
| | - Qiming Wang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China
| | - Duanwei He
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China
| | - Fang Peng
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China
| |
Collapse
|
33
|
Zhuravlev YN, Atuchin VV. First-Principle Studies of the Vibrational Properties of Carbonates under Pressure. SENSORS (BASEL, SWITZERLAND) 2021; 21:3644. [PMID: 34073821 PMCID: PMC8197213 DOI: 10.3390/s21113644] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/17/2021] [Accepted: 05/19/2021] [Indexed: 02/04/2023]
Abstract
Using the density functional theory with the hybrid functional B3LYP and the basis of localized orbitals of the CRYSTAL17 program code, the dependences of the wavenumbers of normal long-wave ν vibrations on the P(GPa) pressure ν(cm-1) = ν0 + (dv/dP)·P + (d2v/dP2)·P and structural parameters R(Å) (R: a, b, c, RM-O, RC-O): ν(cm-1) = ν0 + (dv/dR) - (R - R0) were calculated. Calculations were made for crystals with the structure of calcite (MgCO3, ZnCO3, CdCO3), dolomite (CaMg(CO3)2, CdMg(CO3)2, CaZn(CO3)2) and aragonite (SrCO3, BaCO3, PbCO3). A comparison with the experimental data showed that the derivatives can be used to determine the P pressures, a, b, c lattice constants and the RM-O metal-oxygen, and the RC-O carbon-oxygen interatomic distances from the known Δν shifts. It was found that, with the increasing pressure, the lattice constants and distances R decrease, and the wavenumbers increase with velocities the more, the higher the ν0 is. The exceptions were individual low-frequency lattice modes and out-of-plane vibrations of the v2-type carbonate ion, for which the dependences are either nonlinear or have negative dv/dP (positive dv/dR) derivatives. The reason for this lies in the properties of chemical bonding and the nature of atomic displacements during these vibrations, which cause a decrease in RM-O and an increase in RC-O.
Collapse
Affiliation(s)
- Yurii N. Zhuravlev
- Institute of Basic Sciences, Kemerovo State University, 650000 Kemerovo, Russia;
| | - Victor V. Atuchin
- Research and Development Department, Kemerovo State University, 650000 Kemerovo, Russia
- Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, 630090 Novosibirsk, Russia
- Department of Applied Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
| |
Collapse
|
34
|
Lei J, Lim J, Kim M, Yoo CS. Crystal Structure of Symmetric Ice X in H 2O-H 2 and H 2O-He under Pressure. J Phys Chem Lett 2021; 12:4707-4712. [PMID: 33979522 DOI: 10.1021/acs.jpclett.1c00606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Ice VII and ice X are the two most dominant phases, stable over a large pressure range between 2 and 150 GPa and made of fundamentally different chemical bonding. Yet, the two ice phases share a similar bcc-based crystal structure and lattice constants, resulting in a challenge to discern the crystal structure of ice VII and ice X. Here, we present well-resolved X-ray diffraction data of H2O in quasi-hydrostatic H2 and He pressure media, clearly resolving the two ice phases to 130 GPa and the dissociative nature of ice VII to X transition occurring at 20-50 GPa in H2O-H2 and 60-70 GPa in H2O-He. The present diffraction data permits, for the first time, the accurate determination of the bulk moduli B0 of 225 (or 228) GPa for ice X and 6.2 (or 4.5) GPa for ice VII, in H2O-H2 (or H2O-He), which can provide new constraints for Giant planetary models.
Collapse
Affiliation(s)
- Jialin Lei
- Institute of Shock Physics and Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Jinhyuk Lim
- Institute of Shock Physics and Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Minseob Kim
- Institute of Shock Physics and Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Choong-Shik Yoo
- Institute of Shock Physics and Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| |
Collapse
|
35
|
Shirnezhad T, Fatahi N, Naseri M. A computational prediction of a novel quasi hexagonal Al2SSi semiconductor monolayer. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
36
|
The structural, electronic, and optical properties of hydrofluorinated germanene (GeH 1-xF x): a first-principles study. J Mol Model 2021; 27:123. [PMID: 33825096 DOI: 10.1007/s00894-021-04741-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/15/2021] [Indexed: 10/21/2022]
Abstract
The structural, electronic, and optical properties of hydrofluorinated germanene have been studied with different occupancy ratios of fluorine and hydrogen. The hybridization of H-1 s and Ge-4p orbitals in hydrogenated germanene and F-2p and Ge-4p orbitals in fluorinated germanene plays a significant role in creating an energy bandgap. The binding energy and phonon calculations confirm the stability of hydrofluorinated germanene decreases with the increase of the F to H ratio. The value of the energy bandgap decreased by increasing the ratio of F and H. The optical properties have been studied in the energy range of 0-25 eV. Six essential parameters such as energy bandgap (Eg), binding energy (Eb), dielectric constant ε(0), refractive index n(0), plasmon energy (ћωp), and heat capacity (Cp) have been calculated for different occupancies of H and F in hydrofluorinated germanene for the first time. The calculated values of structural parameters agree well with the reported values.
Collapse
|
37
|
Zhang X, Li W, Tian H, Liu J, Li C, Dong H, Chen J, Song M, Chen B, Sheng H, Wang S, Zhang D, Zhang H. Ultra-incompressible High-Entropy Diborides. J Phys Chem Lett 2021; 12:3106-3113. [PMID: 33754740 DOI: 10.1021/acs.jpclett.1c00399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Transition metal borides are commonly hard and incompressible, offering great opportunities for advanced applications under extreme conditions. Recent studies show that the hardness of high-entropy borides may exceed that of their constituent simple borides due to the "cocktail effect". However, how high-entropy borides deform elastically remains largely unknown. Here, we show that two newly synthesized high-entropy diborides are ultra-incompressible, attaining ∼90% of the incompressibility of single-crystalline diamond and exhibiting a 50-60% enhancement over the density functional theory predictions. This unusual behavior is attributed to a Hall-Petch-like effect resulting from nanosizing under high pressure, which increases the bulk moduli through dynamic dislocation interactions and creation of stacking faults. The exceptionally low compressibility, together with their high phase stabilities, high hardness, and high electric conductance, renders them promising candidates for electromechanics and microelectronic devices that demand strong resistance to environmental impacts, in addition to traditional grinding and abrading.
Collapse
Affiliation(s)
- Xiaoliang Zhang
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Weiwei Li
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Hua Tian
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Junxiu Liu
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Cong Li
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Hongliang Dong
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
| | - Jian Chen
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
- Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Meng Song
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Bin Chen
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Hongwei Sheng
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Shanmin Wang
- Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Dongzhou Zhang
- Partnership for Extreme Crystallography Program, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Hengzhong Zhang
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| |
Collapse
|
38
|
Zhang G, Xu C, Wang M, Dong Y, Sun F, Ren X, Xu H, Zhao Y. Pressure effect of the mechanical, electronics and thermodynamic properties of Mg-B compounds A first-principles investigations. Sci Rep 2021; 11:6096. [PMID: 33731866 PMCID: PMC7969778 DOI: 10.1038/s41598-021-85654-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/04/2021] [Indexed: 11/22/2022] Open
Abstract
First principle calculations were performed to investigate the structural, mechanical, electronic properties, and thermodynamic properties of three binary Mg–B compounds under pressure, by using the first principle method. The results implied that the structural parameters and the mechanical properties of the Mg–B compounds without pressure are well matched with the obtainable theoretically simulated values and experimental data. The obtained pressure–volume and energy–volume revealed that the three Mg–B compounds were mechanically stable, and the volume variation decreases with an increase in the boron content. The shear and volume deformation resistance indicated that the elastic constant Cij and bulk modulus B increased when the pressure increased up to 40 GPa, and that MgB7 had the strongest capacity to resist shear and volume deformation at zero pressure, which indicated the highest hardness. Meanwhile, MgB4 exhibited a ductility transformation behaviour at 30 GPa, and MgB2 and MgB7 displayed a brittle nature under all the considered pressure conditions. The anisotropy of the three Mg–B compounds under pressure were arranged as follows: MgB4 > MgB2 > MgB7. Moreover, the total density of states varied slightly and decreased with an increase in the pressure. The Debye temperature ΘD of the Mg–B compounds gradually increased with an increase in the pressure and the boron content. The temperature and pressure dependence of the heat capacity and the thermal expansion coefficient α were both obtained on the basis of Debye model under increased pressure from 0 to 40 GPa and increased temperatures. This paper brings a convenient understanding of the magnesium–boron alloys.
Collapse
Affiliation(s)
- GuoWei Zhang
- School of Materials Science and Engineering, North University of China, Taiyuan, 030051, Shanxi, China.
| | - Chao Xu
- School of Materials Science and Engineering, North University of China, Taiyuan, 030051, Shanxi, China
| | - MingJie Wang
- School of Materials Science and Engineering, North University of China, Taiyuan, 030051, Shanxi, China
| | - Ying Dong
- School of Materials Science and Engineering, North University of China, Taiyuan, 030051, Shanxi, China
| | - FengEr Sun
- School of Materials Science and Engineering, North University of China, Taiyuan, 030051, Shanxi, China
| | - XiaoYan Ren
- School of Materials Science and Engineering, North University of China, Taiyuan, 030051, Shanxi, China.,Department of mechanical engineering, Taiyuan Institute of Technology, Taiyuan, 030008, Shanxi, China
| | - Hong Xu
- School of Materials Science and Engineering, North University of China, Taiyuan, 030051, Shanxi, China
| | - YuHong Zhao
- School of Materials Science and Engineering, North University of China, Taiyuan, 030051, Shanxi, China
| |
Collapse
|
39
|
Naher MI, Naqib SH. An ab-initio study on structural, elastic, electronic, bonding, thermal, and optical properties of topological Weyl semimetal TaX (X = P, As). Sci Rep 2021; 11:5592. [PMID: 33692423 PMCID: PMC7970924 DOI: 10.1038/s41598-021-85074-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 02/25/2021] [Indexed: 12/04/2022] Open
Abstract
In recent days, study of topological Weyl semimetals have become an active branch of physics and materials science because they led to realization of the Weyl fermions and exhibited protected Fermi arc surface states. Therefore, topological Weyl semimetals TaX (X = P, As) are important electronic systems to investigate both from the point of view of fundamental physics and potential applications. In this work, we have studied the structural, elastic, mechanical, electronic, bonding, acoustic, thermal and optical properties of TaX (X = P, As) in detail via first-principles method using the density functional theory. A comprehensive study of elastic constants and moduli shows that both TaP and TaAs possesses low to medium level of elastic anisotropy (depending on the measure), reasonably good machinability, mixed bonding characteristics with ionic and covalent contributions, brittle nature and relatively high Vickers hardness with a low Debye temperature and melting temperature. The minimum thermal conductivities and anisotropies of TaX (X = P, As) are calculated. Bond population analysis supports the bonding nature as predicted by the elastic parameters. The bulk electronic band structure calculations reveal clear semi-metallic features with quasi-linear energy dispersions in certain sections of the Brillouin zone near the Fermi level. A pseudogap in the electronic energy density of states at the Fermi level separating the bonding and the antibonding states indicates significant electronic stability of tetragonal TaX (X = P, As).The reflectivity spectra show almost non-selective behavior over a wide range of photon energy encompassing visible to mid-ultraviolet regions. High reflectivity over wide spectral range makes TaX suitable as reflecting coating. TaX (X = P, As) are very efficient absorber of ultraviolet radiation. Both the compounds are moderately optically anisotropic owing to the anisotropic nature of the electronic band structure. The refractive indices are very high in the infrared to visible range. All the energy dependent optical parameters show metallic features and are in complete accord with the underlying bulk electronic density of states calculations.
Collapse
Affiliation(s)
- M I Naher
- Department of Physics, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - S H Naqib
- Department of Physics, University of Rajshahi, Rajshahi, 6205, Bangladesh.
| |
Collapse
|
40
|
Etourneau J, Matar SF. rh.-B12 as host of interstitial atoms: Review of a large family with illustrative study of B12{CN2} from first-principles. PROG SOLID STATE CH 2021. [DOI: 10.1016/j.progsolidstchem.2020.100296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
41
|
Optoelectronic, thermodynamic and vibrational properties of intermetallic MgAl2Ge2: a first-principles study. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04214-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
AbstractIntermetallic compounds with CaAl2Si2-type structure have been studied extensively due to their exciting set of physical properties. Among various alumo-germanides, MgAl2Ge2 is the new representative of CaAl2Si2-type structures. Our previous study explores the structural aspects, mechanical behaviors and electronic features of intermetallic MgAl2Ge2. The present work discloses the results of optoelectronic, thermodynamic and vibrational properties of MgAl2Ge2 via density functional theory-based investigations. The band structure calculations suggest that MgAl2Ge2 possesses slight electronic anisotropy and the compound is metallic. The Fermi surface topology reveals that both electron- and hole-like sheets are present in MgAl2Ge2. The electron charge density map indicates toward the dominance of covalent bonding in MgAl2Ge2. The optical parameters are found to be independent of the state of the polarization of incident electric field. The large value of the reflectivity in the visible-to-ultraviolet region up to ~ 15 eV suggests that MgAl2Ge2 might be a good candidate as coating material to avoid solar heating. The thermodynamic properties have been calculated using the quasi-harmonic Debye approximation. We have found indications of lattice instability at the Brillouin zone boundary in the trigonal $$P\overline{3}m1$$
P
3
¯
m
1
phase from the phonon dispersion curves. However, the compound might be stable at elevated temperature and as a function of pressure. All the theoretical findings herein have been compared with the reported results (where available). Various implications of our results have been discussed in detail.
Graphic abstract
Collapse
|
42
|
Pressure effects on electronic, elastic, and vibration properties of metallic antiperovskite PbNCa 3 by ab initio calculations. J Mol Model 2021; 27:7. [PMID: 33392710 DOI: 10.1007/s00894-020-04656-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 12/21/2020] [Indexed: 10/22/2022]
Abstract
Ab initio computations are performed to study the structural, elastic, electronic, and vibrational characteristics of the cubic antiperovskite compound PbNCa3 under pressure up to 50 GPa. By using the generalized gradient approximation (GGA), the equilibrium structural parameters, energy band structure, density of states, elastic properties, and phonon frequencies for PbNCa3 have been examined. We have obtained some concerned feature as Young modulus and Poisson ratio for this compound using the elastic parameters. The computed elastic constant values show that PbNCa3 is stable up to 30 GPa as mechanically. To assess the stability of this compound dynamically, we have investigated the one-phonon DOS and phonon dispersion relations under pressure. Our results indicate that the calculated structural parameter values at 0 GPa are in accord with the existing data.
Collapse
|
43
|
Naseri M, Bafekry A, Faraji M, Hoat DM, Fadlallah MM, Ghergherehchi M, Sabbaghi N, Gogova D. Two-dimensional buckled tetragonal cadmium chalcogenides including CdS, CdSe, and CdTe monolayers as photo-catalysts for water splitting. Phys Chem Chem Phys 2021; 23:12226-12232. [PMID: 34009225 DOI: 10.1039/d1cp00317h] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pure hydrogen production via water splitting is an ideal strategy for producing clean and sustainable energy. Two-dimensional (2D) cadmium chalcogenide single-layers with a tetragonal crystal structure, namely Tetra-CdX (X = S, Se, and Te) monolayers, are theoretically predicted by means of density functional theory (DFT). Their structural stability and electronic and optical properties are investigated. We find that Tetra-CdX single-layers are thermodynamically stable. Their stability decreases as we go down the 6A group in the periodic table, i.e., from X = S to Se, and Te which also means that the electronegativity decreases. All considered novel monolayers are indirect band gap semiconductors. Using the HSE06 functional the electronic band gaps of CdS, CdSe, and CdTe monolayers are predicted to be 3.10 eV, 2.97 eV, and 2.90 eV, respectively. The impact of mechanical strain on the physical properties was studied, which indicates that compressive strain increases the band gap and tensile strain decreases the band gap. The optical properties of the Tetra-CdX monolayers show the ability of these monolayers to absorb visible light. Due to the suitable band gaps and band edge positions of Tetra-CdX, these newly discovered 2D materials are promising for photocatalytic water splitting.
Collapse
Affiliation(s)
- M Naseri
- Department of Physics, Kermanshah Branch, Islamic Azad University, 6718997551, Kermanshah, Iran
| | - A Bafekry
- Department of Radiation Application, Shahid Beheshti University, Tehran, Iran. and Department of Physics, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - M Faraji
- TOBB University of Economics and Technology, Sogutozu Caddesi No 43 Sogutozu, 06560, Ankara, Turkey
| | - D M Hoat
- Institute of Theoretical and Applied Research, Duy Tan University, Ha Noi 100000, Vietnam and Faculty of Natural Sciences, Duy Tan University, Da Nang 550000, Vietnam
| | - Mohamed M Fadlallah
- Department of Physics, Faculty of Science, Benha University, 13518 Benha, Egypt
| | - M Ghergherehchi
- Department of Electrical and Computer Engineering, Sungkyunkwan University, 16419 Suwon, Korea.
| | - N Sabbaghi
- Analytical Research Laboratory, Department of Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran
| | - D Gogova
- Department of Physics, University of Oslo, P.O. Box 1048, Blindern, Oslo, Norway
| |
Collapse
|
44
|
Lu M, Tian F, Zhou Q, Cui T. First principle studies of ammonium chloride under high pressure. RSC Adv 2021; 11:5149-5155. [PMID: 35424432 PMCID: PMC8694683 DOI: 10.1039/d0ra09718g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/08/2021] [Indexed: 11/21/2022] Open
Abstract
Two new phases of NH4Cl, P21/m and Cmma, which are exactly the same as that of NH4Br, were predicted to be stable within the pressure ranges of 71–107 and 107–300 GPa, respectively.
Collapse
Affiliation(s)
- Mengya Lu
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Fubo Tian
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Qiang Zhou
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun 130012
- People's Republic of China
| | - Tian Cui
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun 130012
- People's Republic of China
| |
Collapse
|
45
|
Steele BA, Stavrou E, Prakapenka VB, Kroonblawd MP, Kuo IFW. High-Pressure Equation of State of 1,3,5-triamino-2,4,6-trinitrobenzene: Insights into the Monoclinic Phase Transition, Hydrogen Bonding, and Anharmonicity. J Phys Chem A 2020; 124:10580-10591. [PMID: 33267581 DOI: 10.1021/acs.jpca.0c09463] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The high-pressure equation of state (EOS) of energetic materials (EMs) is important for continuum and mesoscale models of detonation performance and initiation safety. Obtaining a high-fidelity EOS of the insensitive EM 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) has proven to be difficult because of challenges in experimental characterization at high pressures (HPs). In this work, powder X-ray diffraction patterns were fitted using the recently discovered monoclinic I2/a phase above 4 GPa, which shows that TATB is less compressible than when indexed with the triclinic P1̅ phase. First-principles calculations were performed with Perdew-Burke-Ernzerhof (PBE) and PBE0 functionals including thermal effects using the P1̅ phase. PBE0 improves the description of hydrogen bonding and thus predicts accurate planar a and b lattice parameters under ambient conditions. However, discrepancies in the predicted lattice parameters above 4-10 GPa compared with experimental measurements indexed with P1̅ are further evidence of a structural modification at high pressure. Layer sliding defects are formed during molecular dynamics simulations, which induces an anharmonic effect on the thermal expansion of the c lattice parameter. In short, the results provide several insights into determining high-fidelity EOS parameters for TATB and other molecular crystals.
Collapse
Affiliation(s)
- Brad A Steele
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, United States
| | - Elissaios Stavrou
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, United States.,Guangdong Technion Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong Province 515603, P. R. China
| | - Vitali B Prakapenka
- Center for Advanced Radiation Sources, University of Chicago, Chicago, Illinois 60637, United States
| | - Matthew P Kroonblawd
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, United States
| | - I-Feng W Kuo
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, United States
| |
Collapse
|
46
|
Elastic Coefficients of β-HMX as Functions of Pressure and Temperature from Molecular Dynamics. CRYSTALS 2020. [DOI: 10.3390/cryst10121123] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The isothermal second-order elastic stiffness tensor and isotropic moduli of β-1,3,5,7- tetranitro-1,3,5,7-tetrazoctane (β-HMX) were calculated, using the P21/n space group convention, from molecular dynamics for hydrostatic pressures ranging from 10−4 to 30 GPa and temperatures ranging from 300 to 1100 K using a validated all-atom flexible-molecule force field. The elastic stiffness tensor components were calculated as derivatives of the Cauchy stress tensor components with respect to linear strain components. These derivatives were evaluated numerically by imposing small, prescribed finite strains on the equilibrated β-HMX crystal at a given pressure and temperature and using the equilibrium stress tensors of the strained cells to obtain the derivatives of stress with respect to strain. For a fixed temperature, the elastic coefficients increase substantially with increasing pressure, whereas, for a fixed pressure, the elastic coefficients decrease as temperature increases, in accordance with physical expectations. Comparisons to previous experimental and computational results are provided where possible.
Collapse
|
47
|
Evertz S, Schneider JM. Effect of the Free Volume on the Electronic Structure of Cu 70Zr 30 Metallic Glasses. MATERIALS 2020; 13:ma13214911. [PMID: 33142904 PMCID: PMC7672583 DOI: 10.3390/ma13214911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/26/2020] [Accepted: 10/29/2020] [Indexed: 01/27/2023]
Abstract
While it is accepted that the plastic behavior of metallic glasses is affected by their free volume content, the effect on chemical bonding has not been investigated systematically. According to electronic structure analysis, the overall bond strength is not significantly affected by the free volume content. However, with an increasing free volume content, the average coordination number decreases. Furthermore, the volume fraction of regions containing atoms with a lower coordination number increases. As the local bonding character changes from bonding to anti-bonding with a decreasing coordination number, bonding is weakened in the volume fraction of a lower coordination number. During deformation, the number of strong, short-distance bonds decreases more for free volume-containing samples than for samples without free volume, resulting in additional bond weakening. Therefore, we show that the introduction of free volume causes the formation of volume fractions of a lower coordination number, resulting in weaker bonding, and propose that this is the electronic structure origin of the enhanced plastic behavior reported for glasses containing free volume.
Collapse
|
48
|
Zhuravlev YN, Gordienko KA. INFLUENCE OF PRESSURE ON STRUCTURAL, ELECTRONIC, AND OPTICAL PROPERTIES OF CHOLINE IODIDE. J STRUCT CHEM+ 2020. [DOI: 10.1134/s0022476620100029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
49
|
Zhang P, Tang X, Wang Y, Wang X, Gao D, Li Y, Zheng H, Wang Y, Wang X, Fu R, Tang M, Ikeda K, Miao P, Hattori T, Sano-Furukawa A, Tulk CA, Molaison JJ, Dong X, Li K, Ju J, Mao HK. Distance-Selected Topochemical Dehydro-Diels–Alder Reaction of 1,4-Diphenylbutadiyne toward Crystalline Graphitic Nanoribbons. J Am Chem Soc 2020; 142:17662-17669. [DOI: 10.1021/jacs.0c08274] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Peijie Zhang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Xingyu Tang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Yida Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Xuan Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Dexiang Gao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Yapei Li
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Haiyan Zheng
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Yajie Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Xinxin Wang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Riqiang Fu
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
| | - Mingxue Tang
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Kazutaka Ikeda
- Institute of Materials Structure Science, High Energy Accelerator, Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Ping Miao
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tokai, Ibaraki 319-1106, Japan
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P. R. China
- Spallation Neutron Source Science Center, Dongguan 523803, P. R. China
| | - Takanori Hattori
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | | | - Christopher A. Tulk
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Jamie J. Molaison
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Xiao Dong
- Key Laboratory of Weak-Light Nonlinear Photonics, School of Physics, Nankai University, Tianjin 300071, P. R. China
| | - Kuo Li
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| | - Jing Ju
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Ho-kwang Mao
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, P. R. China
| |
Collapse
|
50
|
Hoat D, Naseri M, Ponce-Pérez R, Rivas-Silva J, Kartamyshev A, Cocoletzi GH. P-substitution effects on the electronic structure and thermal properties of the half-metallic half-Heusler NaCrBi compound. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110848] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|