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Weidemann M, Werhahn D, Mayer C, Kläger S, Ritter C, Manuel P, Attfield JP, Kloß SD. High-pressure synthesis of Ruddlesden-Popper nitrides. Nat Chem 2024; 16:1723-1731. [PMID: 38918580 DOI: 10.1038/s41557-024-01558-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 05/15/2024] [Indexed: 06/27/2024]
Abstract
Layered perovskites with Ruddlesden-Popper-type structures are fundamentally important for low-dimensional properties, for example, photovoltaic hybrid iodides and superconducting copper oxides. Many such halides and oxides are known, but analogous nitrides are difficult to stabilize due to the high cation oxidation states required to balance the anion charges. Here we report the high-pressure synthesis of three single-layer Ruddlesden-Popper (K2NiF4 type) nitrides-Pr2ReN4, Nd2ReN4 and Ce2TaN4-along with their structural characterization and properties. The R2ReN4 materials (R = Pr and Nd) are metallic, and Nd2ReN4 has a ferromagnetic Nd3+ spin order below 15 K. Thermal decomposition gives R2ReN3 with a Peierls-type distortion and chains of Re-Re multiply bonded dimers. Ce2TaN4 has a structural transition driven by octahedral tilting, with local distortions and canted magnetic Ce3+ order evidencing two-dimensional Ce3+/Ce4+ charge ordering correlations. Our work demonstrates that Ruddlesden-Popper nitrides with varied structural, electronic and magnetic properties can be prepared from high-pressure synthesis, opening the door to related layered nitride materials.
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Affiliation(s)
- M Weidemann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - D Werhahn
- Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - C Mayer
- Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - S Kläger
- Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - C Ritter
- Institut Laue-Langevin, Grenoble, France
| | - P Manuel
- ISIS Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Didcot, UK
| | - J P Attfield
- Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh, UK
| | - Simon D Kloß
- Department of Chemistry, Ludwig-Maximilians-Universität München, Munich, Germany.
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2
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Mxakaza LF, Mashindi V, Linganiso CE, Moloto N, Tetana ZN. Evaluating the Hydrogen Evolution Reaction Activity of Colloidally Prepared PtSe 2 and PtTe 2 Catalysts in an Alkaline Medium. ChemistryOpen 2024; 13:e202400146. [PMID: 39041679 DOI: 10.1002/open.202400146] [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: 05/09/2024] [Revised: 05/13/2024] [Indexed: 07/24/2024] Open
Abstract
The hydrogen evolution reaction (HER) in alkaline electrolytes using transition metal dichalcogenides is a research area that is not tapped into. Alkaline HER (2 H 2 O + 2 e - → H 2 + O H - ${{2H}_{2}O+2{e\ }^{-}\to {H}_{2}+{OH}^{-}{\rm \ }}$ ) is harder to achieve relative to acidic HER (H + + 2 e - → H 2 ${{H}^{+}+2{e\ }^{-}\to \ {H}_{2}}$ ), this is attributed to the additional water dissociation step that occurs in basic HER to generate H+ ions. In fact, for most catalysts, their HER activity decreases tremendously when the electrolyte is changed from acidic to basic conditions. Platinum dichalcogenides, PtX2 (X=S, Se, Te), are an interesting member of transition metal dichalcogenides (TMDs) as these show an immense hybridization of the Pt d orbitals and chalcogen p orbitals because of closely correlated orbital energies. The trend in electronic properties of these materials changes drastically as the chalcogen is changed, with PtS2 reported to exhibit semi-conductor properties, PtSe2 is semi-metallic or semi-conductive, depending on the number of layers, while PtTe2 is metallic. The effect of varying the chalcogen atom on the HER activity of Pt dichalcogenides will be studied. Pt dichalcogenides have previously been prepared by direct high-temperature chalcogen deposition of Pt substrate and evaluated as electrocatalysts for HER in H2SO4. The previously employed synthesis procedures for PtX2 limit these compounds' mass production and post-synthesis treatment. In this study, we demonstrated, for the first time the preparation of PtSe2 and PtTe2 by colloidal synthesis. Colloidal synthesis offers the possibility of large-scale synthesis of materials and affords the employment of the colloids at various concentrations in ink formulation. The electrochemical HER results acquired in 1 M KOH indicate that PtTe2 has a superior HER catalytic activity to PtSe2. A potential of 108 mV for PtTe2 and 161 mV for PtSe2 is required to produce a current density of -10 mA cm-2 from these catalysts. PtTe2 has a low Tafel slope of 79 mVdec-1, indicating faster HER kinetics on PtTe2. Nonetheless, the stability of these catalysts in an alkaline medium needs to be improved to render them excellent HER electrocatalysts.
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Affiliation(s)
- Lineo F Mxakaza
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa
- DSI/NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa
| | - Victor Mashindi
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa
| | - Cebisa E Linganiso
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa
- DSI/NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa
| | - Nosipho Moloto
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa
| | - Zikhona N Tetana
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa
- DSI/NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida, 1709, Johannesburg, South Africa
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3
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Wu H, Zheng Y, Kan E, Qian Y. Prediction of superhard C 1+xN 1-x compounds with metal-free magnetism and narrow band gaps. Phys Chem Chem Phys 2024; 26:12947-12956. [PMID: 38630436 DOI: 10.1039/d4cp00256c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The scarcity of superhard materials with magnetism or a narrow band gap, despite their potential applications in various fields, makes it desirable to design such materials. Here, a series of C1+xN1-x compounds are theoretically designed by replacing different numbers of nitrogen atoms with carbon atoms in the synthesized C1N1 compound. The results indicate that the compounds C5N3 and C7N1 possess both superhardness and antiferromagnetic ordering due to the introduction of low-coordinated carbon atoms. The hardness of the two compounds is about 40.3 and 54.5 GPa, respectively. The magnetism in both compounds is attributed to the unpaired electrons in low-coordinated carbon atoms, and the magnetic moments are 0.42 and 0.39 μB, respectively. Interestingly, the magnetism in C5N3 remains unaffected by the external pressure used in this study, whereas C7N1 becomes nonmagnetic when the pressure exceeds ∼80 GPa. Electronic calculations reveal that both compounds behave as indirect band gap semiconductors, with narrow energy gaps of about 0.30 and 0.20 eV, respectively. Additionally, the other two compounds, C6N2-I and C6N2-III, exhibit nonmagnetic ordering and possess hardness values of 52.6 and 35.0 GPa, respectively. C6N2-I behaves as a semiconductor with an energy gap of 0.79 eV, and C6N2-III shows metallic behavior. Notably, the energy gaps of C5N3 and C6N2-I remain nearly constant under arbitrary pressure due to their porous and superhard structure. These compounds fill the gap in magnetic or narrow band gap superhard materials, and they can be used in the spintronic or optoelectronic fields where conventional superhard materials are not suitable.
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Affiliation(s)
- Haiping Wu
- School of Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yunhao Zheng
- School of Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Erjun Kan
- School of Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yan Qian
- School of Physics, Nanjing University of Science and Technology, Nanjing 210094, China.
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, China
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4
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Shang K, Feng J, Zhang B, Liu J, Ming X, Kuang X. Tolerance Factor and Phase Stability of the KCoO 2-Type AMN 2 Nitrides. Inorg Chem 2024; 63:4168-4175. [PMID: 38373068 DOI: 10.1021/acs.inorgchem.3c04067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
In order to help understand the structural stability of KCoO2-type ternary nitrides AMN2, referring to perovskite structure, a tolerance factor t is proposed to describe the size effect on the phase/symmetry options of the experimentally accessible AMN2 nitrides. This leads to a range of t values above 0.946 for structurally stable KCoO2-type AMN2 nitrides with t values around 0.970 for the orthorhombic and tetragonal phase boundary. In contrast, most of AMN2 nitrides exhibit α-NaFeO2-type structure with t ∼ 0.898-0.946 and cations ordered or disordered rocksalt structure while t below 0.898. Employing the proposed criterion, the structure formation for other ternary AMN2 compositions with lanthanum and alkaline earth cations for the A sites were predicted, which was testified through the synthesis attempts and complemented by formation energy evaluations. The efforts to synthesize the ternary Lanthanide and alkaline earth-based AMN2 nitrides were unsuccessful, which could associate the structural instability with the large formation energies of lanthanide nitrides LaMN2 and the greater tolerance factor of 1.048 for BaTiN2. The experimentally already synthesized AMN2 nitrides could be categorized into three types with different tolerance factors, and scarce AMN2 nitrides with lower formation energies would be accessible using different synthetic routes beyond the traditional solid-state synthesis method.
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Affiliation(s)
- Kejing Shang
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
| | - Jie Feng
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
| | - Bowen Zhang
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
| | - Junwei Liu
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
| | - Xing Ming
- College of Physics and Electronic Information Engineering, Key Laboratory of Low-Dimensional Structural Physics and Application, Education Department of Guangxi Zhuang Autonomous Region, Guilin University of Technology, Guilin 541004, P. R. China
| | - Xiaojun Kuang
- MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, P. R. China
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5
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Jiang B, Zhu J, Xia Z, Lyu J, Li X, Zheng L, Chen C, Chaemchuen S, Bu T, Verpoort F, Mu S, Wu J, Wang J, Kou Z. Correlating Single-Atomic Ruthenium Interdistance with Long-Range Interaction Boosts Hydrogen Evolution Reaction Kinetics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310699. [PMID: 37967925 DOI: 10.1002/adma.202310699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 11/10/2023] [Indexed: 11/17/2023]
Abstract
Correlated single-atom catalysts (c-SACs) with tailored intersite metal-metal interactions are superior to conventional catalysts with isolated metal sites. However, precise quantification of the single-atomic interdistance (SAD) in c-SACs is not yet achieved, which is essential for a crucial understanding and remarkable improvement of the correlated metal-site-governed catalytic reaction kinetics. Here, three Ru c-SACs are fabricated with precise SAD using a planar organometallic molecular design and π-π molecule-carbon nanotube confinement. This strategy results in graded SAD from 2.4 to 9.3 Å in the Ru c-SACs, wherein tailoring the Ru SAD into 7.0 Å generates an exceptionally high turnover frequency of 17.92 H2 s-1 and a remarkable mass activity of 100.4 A mg-1 under 50 and 100 mV overpotentials, respectively, which is superior to all the Ru-based catalysts reported previously. Furthermore, density functional theory calculations confirm that Ru SAD has a negative correlation with its d-band center owing to the long-range interactions induced by distinct local atomic geometries, resulting in an appropriate electrostatic potential and the highest catalytic activity on c-SACs with 7.0 Å Ru SAD. The present study promises an attractive methodology for experimentally quantifying the metal SAD to provide valuable insights into the catalytic mechanism of c-SACs.
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Affiliation(s)
- Bowen Jiang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, P. R. China
| | - Jiawei Zhu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Zhenzhi Xia
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jiahui Lyu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Nanostructure Research Center, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Xingchuan Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Lirong Zheng
- Institute of High Energy Physics, the Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Cheng Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Sanya Science and Education Innovation Park of Wuhan University of Technology, Sanya, 572000, China
| | - Somboon Chaemchuen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Tongle Bu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Francis Verpoort
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Shichun Mu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jinsong Wu
- Nanostructure Research Center, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - John Wang
- Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore, Singapore, 117574, Singapore
| | - Zongkui Kou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Sanya Science and Education Innovation Park of Wuhan University of Technology, Sanya, 572000, China
- Hubei Key Laboratory of Fuel Cell, Wuhan University of Technology, Wuhan, 430070, P. R. China
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6
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Asano S, Niwa K, Lawler KV, Kawaguchi-Imada S, Sasaki T, Hasegawa M. High-Pressure Synthesis of a High-Pressure Phase of MnN Having NiAs-Type Structure. Inorg Chem 2023. [PMID: 37993285 DOI: 10.1021/acs.inorgchem.3c03241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
A novel high-pressure phase of manganese mononitride, NiAs-type MnN, was successfully synthesized through a pressure-induced phase transition from a tetragonal distorted NaCl-type MnN at pressures above approximately 55 GPa. High-pressure experiments, including starting material preparation, were conducted using a laser-heated diamond anvil cell. This result is the first example of a nitride with a structural phase transition from the distorted NaCl-type to the NiAs-type structure. Upon decompression after the phase transition to NiAs-type structure, the NiAs-type MnN underwent a structural change to the distorted NaCl-type phase, indicating the phase transition was reversible. NiAs-type MnN has a higher density and bulk modulus in comparison to the distorted NaCl-type one. The phase transition pressure of MnN is lower than that of oxides, such as FeO and MnO, which show a structural phase transition from a NaCl-type to a NiAs-type structure. It is suggested that this is due to the lattice distortion caused by antiferromagnetic ordering.
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Affiliation(s)
- Shuto Asano
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan
| | - Ken Niwa
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan
- Research Center for Crystalline Materials Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Keith V Lawler
- Nevada Extreme Conditions Laboratory, University of Nevada Las Vegas, Las Vegas, Nevada 89154, United States
| | | | - Takuya Sasaki
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan
| | - Masashi Hasegawa
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan
- Research Center for Crystalline Materials Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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7
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Jin R, Yuan X, Gao E. Atomic stiffness for bulk modulus prediction and high-throughput screening of ultraincompressible crystals. Nat Commun 2023; 14:4258. [PMID: 37460465 DOI: 10.1038/s41467-023-39826-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 06/22/2023] [Indexed: 07/20/2023] Open
Abstract
Determining bulk moduli is central to high-throughput screening of ultraincompressible materials. However, existing approaches are either too inaccurate or too expensive for general applications, or they are limited to narrow chemistries. Here we define a microscopic quantity to measure the atomic stiffness for each element in the periodic table. Based on this quantity, we derive an analytic formula for bulk modulus prediction. By analyzing numerous crystals from first-principles calculations, this formula shows superior accuracy, efficiency, universality, and interpretability compared to previous empirical/semiempirical formulae and machine learning models. Directed by our formula predictions and verified by first-principles calculations, 47 ultraincompressible crystals rivaling diamond are identified from over one million material candidates, which extends the family of known ultraincompressible crystals. Finally, treasure maps of possible elemental combinations for ultraincompressible crystals are created from our theory. This theory and insights provide guidelines for designing and discovering ultraincompressible crystals of the future.
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Affiliation(s)
- Ruihua Jin
- Department of Engineering Mechanics, Wuhan University, Wuhan, Hubei, 430072, China
| | - Xiaoang Yuan
- Department of Engineering Mechanics, Wuhan University, Wuhan, Hubei, 430072, China
| | - Enlai Gao
- Department of Engineering Mechanics, Wuhan University, Wuhan, Hubei, 430072, China.
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8
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Wang JF, Liu L, Liu XD, Li Q, Cui JM, Zhou DF, Zhou JY, Wei Y, Xu HA, Xu W, Lin WX, Yan JW, He ZX, Liu ZH, Hao ZH, Li HO, Liu W, Xu JS, Gregoryanz E, Li CF, Guo GC. Magnetic detection under high pressures using designed silicon vacancy centres in silicon carbide. NATURE MATERIALS 2023; 22:489-494. [PMID: 36959503 DOI: 10.1038/s41563-023-01477-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 01/12/2023] [Indexed: 06/18/2023]
Abstract
Pressure-induced magnetic phase transitions are attracting interest as a means to detect superconducting behaviour at high pressures in diamond anvil cells, but determining the local magnetic properties of samples is a challenge due to the small volumes of sample chambers. Optically detected magnetic resonance of nitrogen vacancy centres in diamond has recently been used for the in situ detection of pressure-induced phase transitions. However, owing to their four orientation axes and temperature-dependent zero-field splitting, interpreting these optically detected magnetic resonance spectra remains challenging. Here we study the optical and spin properties of implanted silicon vacancy defects in 4H-silicon carbide that exhibit single-axis and temperature-independent zero-field splitting. Using this technique, we observe the magnetic phase transition of Nd2Fe14B at about 7 GPa and map the critical temperature-pressure phase diagram of the superconductor YBa2Cu3O6.6. These results highlight the potential of silicon vacancy-based quantum sensors for in situ magnetic detection at high pressures.
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Affiliation(s)
- Jun-Feng Wang
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- College of Physics, Sichuan University, Chengdu, China
| | - Lin Liu
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Xiao-Di Liu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China.
| | - Qiang Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Jin-Ming Cui
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
| | - Di-Fan Zhou
- Physics Department, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai, China
| | - Ji-Yang Zhou
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Yu Wei
- Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, China
| | - Hai-An Xu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Wan Xu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Wu-Xi Lin
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
| | - Jin-Wei Yan
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
| | - Zhen-Xuan He
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Zheng-Hao Liu
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Zhi-He Hao
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
| | - Hai-Ou Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
| | - Wen Liu
- Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei, China
| | - Jin-Shi Xu
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China.
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China.
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
| | - Eugene Gregoryanz
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China.
- Centre for Science at Extreme Conditions and School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK.
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai, China.
| | - Chuan-Feng Li
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China.
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China.
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
| | - Guang-Can Guo
- CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, China
- CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, China
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9
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Del Canale E, Fornari L, Coppi C, Spaggiari G, Mezzadri F, Trevisi G, Ferro P, Gilioli E, Mazzer M, Delmonte D. High-Pressure Bulk Synthesis of InN by Solid-State Reaction of Binary Oxide in a Multi-Anvil Apparatus. Inorg Chem 2023; 62:5016-5022. [PMID: 36926858 DOI: 10.1021/acs.inorgchem.3c00231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
We present a new method to synthesize bulk indium nitride by means of a simple solid-state chemical reaction carried out under hydrostatic high-pressure/high-temperature conditions in a multi-anvil apparatus, not involving gases or solvents during the process. The reaction occurs between the binary oxide In2O3 and the highly reactive Li3N as the nitrogen source, in the powder form. The formation of the hexagonal phase of InN, occurring at 350 °C and P ≥ 3 GPa, was successfully confirmed by powder X-ray diffraction, with the presence of Li2O as a unique byproduct. A simple washing process in weak acidic solution followed by centrifugation allowed us to obtain pure InN polycrystalline powders as a precipitate. With an analogous procedure, it was possible to obtain pure bulk GaN, from Ga2O3 and Li3N at T ≥ 600 °C and P ≥ 2.5 GPa. These results point out, particularly for InN, a clean, and innovative way to produce significant quantities of one of the most promising nitrides in the field of electronics and energy technologies.
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Affiliation(s)
- Elena Del Canale
- CNR - IMEM, 43124 Parma, Italy.,SCVSA Department, Università degli Studi di Parma, 43124 Parma, Italy
| | - Lorenzo Fornari
- CNR - IMEM, 43124 Parma, Italy.,SCVSA Department, Università degli Studi di Parma, 43124 Parma, Italy
| | - Chiara Coppi
- CNR - IMEM, 43124 Parma, Italy.,SCVSA Department, Università degli Studi di Parma, 43124 Parma, Italy
| | - Giulia Spaggiari
- CNR - IMEM, 43124 Parma, Italy.,Department of Mathematical, Physical and Computer Sciences, Università degli Studi di Parma, 43124 Parma, Italy
| | - Francesco Mezzadri
- CNR - IMEM, 43124 Parma, Italy.,SCVSA Department, Università degli Studi di Parma, 43124 Parma, Italy
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10
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Laniel D, Trybel F, Néri A, Yin Y, Aslandukov A, Fedotenko T, Khandarkhaeva S, Tasnádi F, Chariton S, Giacobbe C, Bright EL, Hanfland M, Prakapenka V, Schnick W, Abrikosov IA, Dubrovinsky L, Dubrovinskaia N. Revealing Phosphorus Nitrides up to the Megabar Regime: Synthesis of α'-P 3 N 5, δ-P 3 N 5 and PN 2. Chemistry 2022; 28:e202201998. [PMID: 35997073 PMCID: PMC9827839 DOI: 10.1002/chem.202201998] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Indexed: 01/12/2023]
Abstract
Non-metal nitrides are an exciting field of chemistry, featuring a significant number of compounds that can possess outstanding material properties. These properties mainly rely on maximizing the number of strong covalent bonds, with crosslinked XN6 octahedra frameworks being particularly attractive. In this study, the phosphorus-nitrogen system was studied up to 137 GPa in laser-heated diamond anvil cells, and three previously unobserved phases were synthesized and characterized by single-crystal X-ray diffraction, Raman spectroscopy measurements and density functional theory calculations. δ-P3 N5 and PN2 were found to form at 72 and 134 GPa, respectively, and both feature dense 3D networks of the so far elusive PN6 units. The two compounds are ultra-incompressible, having a bulk modulus of K0 =322 GPa for δ-P3 N5 and 339 GPa for PN2 . Upon decompression below 7 GPa, δ-P3 N5 undergoes a transformation into a novel α'-P3 N5 solid, stable at ambient conditions, that has a unique structure type based on PN4 tetrahedra. The formation of α'-P3 N5 underlines that a phase space otherwise inaccessible can be explored through materials formed under high pressure.
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Affiliation(s)
- Dominique Laniel
- Material Physics and Technology at Extreme ConditionsLaboratory of CrystallographyUniversity of Bayreuth95440BayreuthGermany
- Centre for Science at Extreme Conditions and School of Physics and AstronomyUniversity of EdinburghEH9 3FDEdinburghUK
| | - Florian Trybel
- Department of PhysicsChemistry and Biology (IFM)Linköping University58183LinköpingSweden
| | - Adrien Néri
- Bayerisches GeoinstitutUniversity of Bayreuth95440BayreuthGermany
| | - Yuqing Yin
- Material Physics and Technology at Extreme ConditionsLaboratory of CrystallographyUniversity of Bayreuth95440BayreuthGermany
- State Key Laboratory of Crystal MaterialsShandong UniversityJinan250100P. R. China
| | - Andrey Aslandukov
- Material Physics and Technology at Extreme ConditionsLaboratory of CrystallographyUniversity of Bayreuth95440BayreuthGermany
- Bayerisches GeoinstitutUniversity of Bayreuth95440BayreuthGermany
| | | | | | - Ferenc Tasnádi
- Department of PhysicsChemistry and Biology (IFM)Linköping University58183LinköpingSweden
| | - Stella Chariton
- Center for Advanced Radiation SourcesUniversity of ChicagoChicagoIL 60637USA
| | - Carlotta Giacobbe
- European Synchrotron Radiation FacilityB.P. 22038043Grenoble CedexFrance
| | | | - Michael Hanfland
- European Synchrotron Radiation FacilityB.P. 22038043Grenoble CedexFrance
| | - Vitali Prakapenka
- Center for Advanced Radiation SourcesUniversity of ChicagoChicagoIL 60637USA
| | - Wolfgang Schnick
- Department of ChemistryUniversity of Munich (LMU)Butenandtstrasse 5–1381377MunichGermany
| | - Igor A. Abrikosov
- Department of PhysicsChemistry and Biology (IFM)Linköping University58183LinköpingSweden
| | | | - Natalia Dubrovinskaia
- Material Physics and Technology at Extreme ConditionsLaboratory of CrystallographyUniversity of Bayreuth95440BayreuthGermany
- Department of PhysicsChemistry and Biology (IFM)Linköping University58183LinköpingSweden
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11
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Light alloying element-regulated noble metal catalysts for energy-related applications. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63899-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Zhang C, Liu W, Chen C, Ni P, Wang B, Jiang Y, Lu Y. Emerging interstitial/substitutional modification of Pd-based nanomaterials with nonmetallic elements for electrocatalytic applications. NANOSCALE 2022; 14:2915-2942. [PMID: 35138321 DOI: 10.1039/d1nr06570j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Palladium (Pd)-based nanomaterials have been identified as potential candidates for various types of electrocatalytic reaction, but most of them typically exhibit unsatisfactory performances. Recently, extensive theoretical and experimental studies have demonstrated that the interstitial/substitutional modification of Pd-based nanomaterials with nonmetallic atoms (H, B, C, N, P, S) has a significant impact on their electronic structure and thus leads to the rapid development of one kind of promising catalyst for various electrochemical reactions. Considering the remarkable progress in this area, we highlight the most recent progress regarding the innovative synthesis and advanced characterization methods of nonmetallic atom-doped Pd-based nanomaterials and provide insights into their electrochemical applications. What's more, the unique structure- and component-dependent electrochemical performance and the underlying mechanisms are also discussed. Furthermore, a brief conclusion about the recent progress achieved in this field as well as future perspectives and challenges are provided.
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Affiliation(s)
- Chenghui Zhang
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China.
| | - Wendong Liu
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, Tianjin University, Tianjin 300072, China
| | - Chuanxia Chen
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China.
| | - Pengjuan Ni
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China.
| | - Bo Wang
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China.
| | - Yuanyuan Jiang
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China.
| | - Yizhong Lu
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China.
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13
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Asano S, Niwa K, Sasaki T, Gaida NA, Hasegawa M. High pressure synthesis and the valence state of vanadium ions for the novel transition metal pernitride, CuAl 2-type VN 2. Dalton Trans 2022; 51:2656-2659. [PMID: 35106526 DOI: 10.1039/d1dt04310b] [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
A novel transition metal pernitride, CuAl2-type VN2, has been synthesized at a pressure above 73.3 GPa. The bulk modulus has been determined to be K0 = 347(12) GPa. By hard X-ray absorption spectrum measurements of VN2, the valence state of transition metal ions in pernitrides has been for the first time experimentally reported.
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Affiliation(s)
- Shuto Asano
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan.
| | - Ken Niwa
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan.
| | - Takuya Sasaki
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan.
| | - Nico Alexander Gaida
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan.
| | - Masashi Hasegawa
- Department of Materials Physics, Graduate School of Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan.
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14
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Wang Y, Lv H, Sun L, Liu B. Mesoporous Noble Metal-Metalloid/Nonmetal Alloy Nanomaterials: Designing Highly Efficient Catalysts. ACS NANO 2021; 15:18661-18670. [PMID: 34910448 DOI: 10.1021/acsnano.1c10112] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mesoporous metals have received increasing attention in catalysis and related applications because of their novel physicochemical properties and functional geometric features. Control of multicomponent compositions and crystalline structures of mesoporous metals is critical for their applications. Recently, mesoporous metals have gradually expanded from traditional metal-metal alloys to metal-metalloid/nonmetal alloys with random solids and/or ordered intermetallics. As new, highly efficient nanocatalysts, mesoporous metal-metalloid/nonmetal alloys not only increase the utilization efficiency of precious noble metals and accelerate electron/mass transfer but also introduce new functions and optimize the surface electronic structure of metal sites, all of which enhance their catalytic activity and stability and tune their catalytic selectivity. In this Perspective, we focus on the latest developments in this area, including the findings from our group regarding the rational design and targeted synthesis of mesoporous noble metal-metalloid/nonmetal alloy nanocatalysts. We summarize the current synthetic strategies for mesoporous noble metal-metalloid/nonmetal alloys and discuss key effects of crystalline mesoporosity and metalloid/nonmetal alloys in enhancing catalytic performances of noble metal catalysts. We also describe the current bottlenecks and major challenges to explore further directions in synthesis and applications of mesoporous noble metal-metalloid/nonmetal alloys.
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Affiliation(s)
- Yanzhi Wang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hao Lv
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lizhi Sun
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ben Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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15
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Abstract
Chemical vapor deposition (CVD) is a promising approach for the controllable synthesis of two-dimensional (2D) materials. Many studies have demonstrated that the morphology and structure of 2D materials are highly dependent on growth substrates. Hence, the choice of growth substrates is essential to achieve the precise control of CVD growth. Noble metal substrates have attracted enormous interest owing to the high catalytic activity and rich surface morphology for 2D material growth. In this review, we introduce recent progress in noble metals as substrates for the controllable growth of 2D materials. The underlying growth mechanism and substrate designs of noble metals based on their unique features are thoroughly discussed. In the end, we outline the advantages and challenges of using noble metal substrates and prospect the possible approaches to extend the uses of noble metal substrates for 2D material growth and enhance the structural controllability of the grown materials.
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Affiliation(s)
- Yang Gao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Yang Liu
- Cyber Security Research Centre, Nanyang Technological University, Singapore 639798, Singapore.,School of Computer Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Zheng Liu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.,CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, Singapore 637553, Singapore.,School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
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16
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Kloß SD, Weidemann ML, Attfield JP. Preparation of Bulk‐Phase Nitride Perovskite LaReN
3
and Topotactic Reduction to LaNiO
2
‐Type LaReN
2. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108759] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Simon D. Kloß
- Centre for Science at Extreme Conditions University of Edinburgh Edinburgh EH9 3FD UK
- Ludwig-Maximilians-University Munich Department Chemistry 81377 Munich Germany
| | - Martin L. Weidemann
- Ludwig-Maximilians-University Munich Department Chemistry 81377 Munich Germany
| | - J. Paul Attfield
- Centre for Science at Extreme Conditions University of Edinburgh Edinburgh EH9 3FD UK
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17
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Kloß SD, Weidemann ML, Attfield JP. Preparation of Bulk-Phase Nitride Perovskite LaReN 3 and Topotactic Reduction to LaNiO 2 -Type LaReN 2. Angew Chem Int Ed Engl 2021; 60:22260-22264. [PMID: 34355842 DOI: 10.1002/anie.202108759] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/02/2021] [Indexed: 11/09/2022]
Abstract
While halide and oxide perovskites are numerous and many display outstanding properties, ABN3 perovskite nitrides are extremely rare due to synthetic challenges arising from the low chemical potential of nitrogen and a tendency to form low-coordination nitridometallate anions. We report the preparation of a perovskite nitride LaReN3 through azide-mediated oxidation at high pressure. High-resolution synchrotron diffraction shows that LaReN3 has a low-symmetry, triclinic, perovskite superstructure resulting from orbital ordering with strong spin-orbit coupling distortions. Topotactic reduction of LaReN3 above 500 °C leads to layered tetragonal LaReN2 via a probable LaReN2.5 intermediate, which is the first reported example of nitride defect perovskites. Magnetisation and conductivity measurements indicate that LaReN3 and LaReN2 are both metallic solids. The two chemical approaches presented are expected to lead to new classes of ABN3 and defect ABN3-x nitride perovskite materials.
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Affiliation(s)
- Simon D Kloß
- Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh, EH9 3FD, UK.,Ludwig-Maximilians-University Munich, Department Chemistry, 81377, Munich, Germany
| | - Martin L Weidemann
- Ludwig-Maximilians-University Munich, Department Chemistry, 81377, Munich, Germany
| | - J Paul Attfield
- Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh, EH9 3FD, UK
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18
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Wang YX, Liu YY, Yan ZX, Liu W, Zhou GL, Xiong KZ. Crystal structures and mechanical properties of osmium diboride at high pressure. Sci Rep 2021; 11:5754. [PMID: 33707654 PMCID: PMC7970957 DOI: 10.1038/s41598-021-85334-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/25/2021] [Indexed: 11/09/2022] Open
Abstract
We have investigated the crystal structures and mechanical properties of osmium diboride (OsB2) based on the density functional theory. The structures of OsB2 from 0 to 400 GPa were predicted using the particle swarm optimization algorithm structure prediction technique. The orthorhombic Pmmn structure of OsB2 (oP6-OsB2) was found to be the most stable phase under zero pressure and it will transfer to the hexagonal P63/mmc structure (hP6-OsB2) around 12.4 GPa. Meanwhile, we have discovered a new stable orthorhombic Immm structure (oI12-OsB2) above 379.6 GPa. After that, a thorough and comprehensive investigation on mechanical properties of different OsB2 phases is performed in this work. Further studies showed that the hardness of oP6-OsB2 and hP6-OsB2 at zero pressure is 15.6 and 20.1 GPa, while that for oI12-OsB2 under 400 GPa is 15.4 GPa, indicating that these three phases should be potentially hard materials rather than superhard materials. Finally, the pressure-temperature phase diagram of OsB2 is constructed for the first time by using the quasi-harmonic approximation method. Our results showed that the transition pressures of oP6-OsB2 → hP6-OsB2 and hP6-OsB2 → oI12-OsB2 all decreases appreciably with the increase of temperature.
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Affiliation(s)
- Yi X Wang
- College of Science, Xi'an University of Science and Technology, Xi'an, 710054, People's Republic of China.
| | - Ying Y Liu
- College of Science, Xi'an University of Science and Technology, Xi'an, 710054, People's Republic of China
| | - Zheng X Yan
- College of Science, Xi'an University of Science and Technology, Xi'an, 710054, People's Republic of China
| | - Wei Liu
- College of Science, Xi'an University of Science and Technology, Xi'an, 710054, People's Republic of China
| | - Gao L Zhou
- College of Science, Xi'an University of Science and Technology, Xi'an, 710054, People's Republic of China
| | - Ke Z Xiong
- College of Science, Xi'an University of Science and Technology, Xi'an, 710054, People's Republic of China
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19
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Kronbo CH, Ottesen M, Hansen MF, Ehrenreich-Petersen E, Meng Y, Bremholm M. Discovery of Rhombohedral NaIrO 3 Polymorph by In Situ High-Pressure Synthesis of High-Oxidation-State Materials Using Laser Heating in Diamond Anvil Cells. Inorg Chem 2020; 59:15780-15787. [PMID: 33131276 DOI: 10.1021/acs.inorgchem.0c02233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We report a new in situ synthesis method effective for discovery of high-oxidation-state materials using laser-heated diamond anvil cells. The issue of chemical reduction during thermally induced phase transitions that occur spontaneously in a noble gas pressure transmitting media (PTM) can be overcome by thermal decomposition of an oxygen-rich solid PTM (NaCl + NaClO3). To illustrate the technical challenges the method overcomes, we applied this new method for two known pentavalent A(I)B(V)O3 postperovskite compounds. We successfully synthesized the two postperovskites, NaOsO3 and NaIrO3, and quenched to ambient conditions. Furthermore, we report the discovery of a new low-pressure polymorph of NaIrO3, illustrating the high potential for new materials discovery. This new method will enable realization of new high-oxidation-state postperovskites and can be applied for many other structure families in a P, T parameter space that is not easily accessible using conventional high-pressure synthesis methods.
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Affiliation(s)
- Camilla H Kronbo
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus C 8000, Denmark
| | - Martin Ottesen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus C 8000, Denmark
| | - Mads F Hansen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus C 8000, Denmark
| | - Emma Ehrenreich-Petersen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus C 8000, Denmark
| | - Yue Meng
- HPCAT, X-ray Science Division, Argonne National Lab, Lemont, Illinois 60439, United States
| | - Martin Bremholm
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus C 8000, Denmark
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20
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Zhang J, Lin L, Cui H. Plasma-Assisted Synthesis of Platinum Nitride Nanoparticles under HPHT: Realized by Carbon-Encapsulated Ultrafine Pt Nanoparticles. NANOMATERIALS 2020; 10:nano10091780. [PMID: 32916789 PMCID: PMC7558508 DOI: 10.3390/nano10091780] [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: 08/20/2020] [Revised: 09/04/2020] [Accepted: 09/06/2020] [Indexed: 11/16/2022]
Abstract
Noble metal nitrides (NMNs) have important theoretical significance and potential application prospects due to their high bulk modulus and remarkable electrical properties. However, NMNs can only be synthesized under extreme conditions of ultrahigh pressure and temperature, and nanoscaled NMNs have not been reported. In this work, as typical NMNs, PtNx nanoparticles were synthesized at 5 GPa and 750 K by the method of plasma-assisted laser-heating diamond anvil cell. The significantly reduced synthesis condition benefited from the ingenious design of the precursor and the remarkable chemical activity of the ultrafine Pt nanoparticles. This study, combining nanomaterials with high-pressure and -temperature (HPHT) techniques, provides a novel process for the preparation of NMN nanomaterials, and a new direction for the synthesis of superhard materials.
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Affiliation(s)
- Jian Zhang
- College of Science, Beihua University, Jilin 132013, China;
| | - Lin Lin
- Jilin Provincial Key Laboratory of Wooden Materials Science and Engineering, Beihua University, Jilin 132013, China
- Correspondence:
| | - Hang Cui
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;
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21
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Li Y, Bu H, Wang Q, Lin J, Wang X, Li J, Zhu P, Zhu H. Synthesis and high-pressure studies of strontium diazenide by synchrotron X-ray diffraction and DFT calculations. RSC Adv 2020; 10:26308-26312. [PMID: 35519776 PMCID: PMC9055401 DOI: 10.1039/d0ra00789g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 07/06/2020] [Indexed: 11/21/2022] Open
Abstract
In this work, strontium diazenide (SrN2) was synthesized using strontium azide as a starting material in a Walker-type module under high-pressure and high-temperature conditions. The synthesized SrN2 was further studied under high pressure up to 43.2 GPa using in situ synchrotron X-ray diffraction to supplement the high-pressure exploration of alkaline earth diazenides. The SrN2 underwent a possible phase transition from a tetragonal structure into an orthorhombic structure at 12.0 GPa. SrN2 shows anisotropic compressibility due to the orientation of the diazenide anions. The bulk modulus of SrN2 is 132.4 (10.2) GPa, which is larger than that of Sr(N3)2. The larger bulk modulus of SrN2 is attributed to the stronger covalent strength between Sr and N atoms in SrN2, which is confirmed by our theoretical calculations.
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Affiliation(s)
- Yue Li
- School of Physics and Electronic Engineering, Linyi University Linyi 276005 P. R. China
- State Key Lab of Superhard Materials, College of Physics, Jilin University Changchun 130012 P. R. China
| | - Huanpeng Bu
- State Key Lab of Superhard Materials, College of Physics, Jilin University Changchun 130012 P. R. China
| | - Qinglin Wang
- Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University Liaocheng 252059 P. R. China
| | - Jiani Lin
- School of Physics and Electronic Engineering, Linyi University Linyi 276005 P. R. China
- State Key Lab of Superhard Materials, College of Physics, Jilin University Changchun 130012 P. R. China
| | - Xiaoli Wang
- School of Physics and Electronic Engineering, Linyi University Linyi 276005 P. R. China
| | - Jianfu Li
- School of Physics and Electronic Engineering, Linyi University Linyi 276005 P. R. China
| | - Pinwen Zhu
- State Key Lab of Superhard Materials, College of Physics, Jilin University Changchun 130012 P. R. China
| | - Hongyang Zhu
- School of Physics and Electronic Engineering, Linyi University Linyi 276005 P. R. China
- State Key Lab of Superhard Materials, College of Physics, Jilin University Changchun 130012 P. R. China
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22
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Xiong Y, Ma Y, Zou L, Han S, Chen H, Wang S, Gu M, Shen Y, Zhang L, Xia Z, Li J, Yang H. N-doping induced tensile-strained Pt nanoparticles ensuring an excellent durability of the oxygen reduction reaction. J Catal 2020. [DOI: 10.1016/j.jcat.2019.12.025] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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23
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Niwa K, Inagaki T, Ohsuna T, Liu Z, Sasaki T, Gaida NA, Hasegawa M. Crystal structures and electronic properties of Sn 3N 4 polymorphs synthesized via high-pressure nitridation of tin. CrystEngComm 2020. [DOI: 10.1039/d0ce00210k] [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
Sn3N4 polymorphs were synthesized via high-pressure nitridation of tin by means of laser-heated diamond anvil cell technique. This implies new insight into the crystal chemistry and functional materials of group IVA nitrides.
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Affiliation(s)
- Ken Niwa
- Department of Materials Physics
- Nagoya University
- Nagoya
- Japan
| | - Tomoya Inagaki
- Department of Materials Physics
- Nagoya University
- Nagoya
- Japan
| | - Tetsu Ohsuna
- Department of Materials Physics
- Nagoya University
- Nagoya
- Japan
| | - Zheng Liu
- National Institute of Advanced Industrial Science and Technology
- Nagoya
- Japan
| | - Takuya Sasaki
- Department of Materials Physics
- Nagoya University
- Nagoya
- Japan
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24
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Sasaki T, Ikoma T, Sago K, Liu Z, Niwa K, Ohsuna T, Hasegawa M. High-Pressure Synthesis and Crystal Structure of MoC-Type Tungsten Nitride by Nitridation with Ammonium Chloride. Inorg Chem 2019; 58:16379-16386. [PMID: 31793774 DOI: 10.1021/acs.inorgchem.9b01945] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel tungsten nitride, MoC-type WN, was synthesized at 6 GPa and 1200 °C via nitridation of tungsten by ammonium chloride as a nitrogen source. This compound is isostructural with γ'-MoC, which has a hexagonal structure with a space group of P63/mmc (No. 194). Micrometer-sized single crystals of MoC-type WN were grown in molten ammonium chloride flux. In addition, NaCl-type WN and WC-type WN were synthesized via nitridation by ammonium chloride at 6 GPa and 1000 °C. Ammonium chloride is appropriate as a nitrogen source for nitride synthesis under high pressure. The new WN phase crystallizes in the hexagonal structure with unit cell parameters of a = 2.89248(2) Å and c = 10.17069(7) Å. The chemical formula of MoC-type WN refined by the Rietveld analysis from powder X-ray diffraction data was WN0.60(1). The zero-pressure bulk modulus, K0, of MoC-type WN was determined to be 338(3) GPa, which can be expected to be a hard material.
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Affiliation(s)
- Takuya Sasaki
- Department of Materials Physics, Graduate School of Engineering , Nagoya University , Furo-cho, Chikusa-ku, Nagoya , Aichi 464-8603 , Japan
| | - Takahide Ikoma
- Department of Materials Physics, Graduate School of Engineering , Nagoya University , Furo-cho, Chikusa-ku, Nagoya , Aichi 464-8603 , Japan
| | - Kazuki Sago
- Department of Crystalline Materials Science, Graduate School of Engineering , Nagoya University , Furo-cho, Chikusa-ku, Nagoya , Aichi 464-8603 , Japan
| | - Zheng Liu
- Tailored Liquid Integration Group, Inorganic Functional Materials Research Institute , The National Institute of Advanced Industrial Science and Technology AIST , Chubu 2266-98 , Anagahora, Shimoshidami, Moriyama-ku, Nagoya , Aichi 463-8560 , Japan
| | - Ken Niwa
- Department of Materials Physics, Graduate School of Engineering , Nagoya University , Furo-cho, Chikusa-ku, Nagoya , Aichi 464-8603 , Japan
| | - Tetsu Ohsuna
- Department of Materials Physics, Graduate School of Engineering , Nagoya University , Furo-cho, Chikusa-ku, Nagoya , Aichi 464-8603 , Japan
| | - Masashi Hasegawa
- Department of Materials Physics, Graduate School of Engineering , Nagoya University , Furo-cho, Chikusa-ku, Nagoya , Aichi 464-8603 , Japan
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25
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Niwa K, Fukui R, Terabe T, Kawada T, Kato D, Sasaki T, Soda K, Hasegawa M. High-Pressure Synthesis and Phase Stability of Nickel Pernitride. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900489] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ken Niwa
- Department of Materials Physics; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
| | - Riku Fukui
- Department of Materials Physics; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
| | - Toshiki Terabe
- Department of Crystalline Materials Science; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
| | - Takuya Kawada
- Department of Materials Physics; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
| | - Daiki Kato
- Department of Quantum Engineering; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
| | - Takuya Sasaki
- Department of Materials Physics; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
| | - Kazuo Soda
- Department of Materials Physics; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
- Synchrotron Radiation Research Center; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
| | - Masashi Hasegawa
- Department of Materials Physics; Nagoya University; Furo-cho, Chikusa-ku Nagoya, Aichi 464-8603 Japan
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26
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Tamaoka T, Aso R, Yoshida H, Takeda S. Reversible gas-solid reaction in an electronically-stimulated palladium nanogap. NANOSCALE 2019; 11:8715-8717. [PMID: 31017153 DOI: 10.1039/c9nr00806c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We investigated a nanogap between a pair of palladium electrode tips with gas (nitrogen, hydrogen, and oxygen) and a biasing voltage using in situ atomic resolution environmental transmission electron microscopy (ETEM). We found an unexpected gas-solid (nitrogen-palladium) reaction that occurs on the surface of the positive electrode tip. A palladium nitride compound was synthesized with gaseous nitrogen at low pressure at room temperature. The nitridation of palladium was previously reported and predicted to occur only under high pressure and at high temperature. The reaction in ETEM apparatus was reversible with the change in the magnitude of an electric field in the nanogap. Additionally, the asymmetrical surface dynamics on the pair of electrode tips in gas (nitrogen, hydrogen, and oxygen) were revealed by ETEM observation. It is likely that the electrons in the gap induce the reversible reaction. This study has opened a new route toward creating nanoscale materials because the creation, stabilization, and annihilation of the material in a nanogap can be controlled electrically and electronically on demand for various applications.
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Affiliation(s)
- Takehiro Tamaoka
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
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27
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Binns J, Donnelly ME, Peña-Alvarez M, Wang M, Gregoryanz E, Hermann A, Dalladay-Simpson P, Howie RT. Direct Reaction between Copper and Nitrogen at High Pressures and Temperatures. J Phys Chem Lett 2019; 10:1109-1114. [PMID: 30785288 DOI: 10.1021/acs.jpclett.9b00070] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Transition-metal nitrides have applications in a range of technological fields. Recent experiments have shown that new nitrogen-bearing compounds can be accessed through a combination of high temperatures and pressures, revealing a richer chemistry than was previously assumed. Here, we show that at pressures above 50 GPa and temperatures greater than 1500 K elemental copper reacts with nitrogen, forming copper diazenide (CuN2). Through a combination of synchrotron X-ray diffraction and first-principles calculations we have explored the stability and electronic structure of CuN2. We find that the novel compound remains stable down to 25 GPa before decomposing to its constituent elements. Electronic structure calculations show that CuN2 is metallic and exhibits partially filled N2 antibonding orbitals, leading to an ambiguous electronic structure between Cu+/Cu2+. This leads to weak Cu-N bonds and the lowest bulk modulus observed for any transition-metal nitride.
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Affiliation(s)
- Jack Binns
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , China
| | - Mary-Ellen Donnelly
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , China
| | - Miriam Peña-Alvarez
- Centre for Science at Extreme Conditions and The School of Physics & Astronomy , The University of Edinburgh , Peter Guthrie Tait Road , Edinburgh EH9 3FD , United Kingdom
| | - Mengnan Wang
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , China
| | - Eugene Gregoryanz
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , China
- Centre for Science at Extreme Conditions and The School of Physics & Astronomy , The University of Edinburgh , Peter Guthrie Tait Road , Edinburgh EH9 3FD , United Kingdom
| | - Andreas Hermann
- Centre for Science at Extreme Conditions and The School of Physics & Astronomy , The University of Edinburgh , Peter Guthrie Tait Road , Edinburgh EH9 3FD , United Kingdom
| | - Philip Dalladay-Simpson
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , China
| | - Ross T Howie
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , China
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28
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Laniel D, Geneste G, Weck G, Mezouar M, Loubeyre P. Hexagonal Layered Polymeric Nitrogen Phase Synthesized near 250 GPa. PHYSICAL REVIEW LETTERS 2019; 122:066001. [PMID: 30822079 DOI: 10.1103/physrevlett.122.066001] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 12/14/2018] [Indexed: 06/09/2023]
Abstract
The nitrogen triple bond dissociates in the 100 GPa pressure range and a rich variety of single-bonded polymeric nitrogen structures unique to this element have been predicted up to the terapascal pressure range. The nonmolecular cubic-gauche (cg-N) structure was first observed above 110 GPa, coupled to high temperature (>2000 K) to overcome the kinetic barrier. A mixture of cg-N with a layered phase was afterwards reported between 120 and 180 GPa. Here, by laser heating pure nitrogen from 180 GPa, a sole crystalline phase is characterized above 240 GPa while an amorphous transparent phase is obtained at pressures below. X-ray diffraction and Raman vibrational data reveal a tetragonal lattice (P4_{2}bc) that matches the predicted hexagonal layered polymeric nitrogen (HLP-N) structure. Density-functional theory calculations which include the thermal and dispersive interaction contributions are performed to discuss the stability of the HLP-N structure.
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Affiliation(s)
- D Laniel
- CEA, DAM, DIF, F-91297 Arpajon, France
- CNES Launcher Directorate, 52 rue J. Hillairet, 75612 Paris CEDEX, France
| | - G Geneste
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - G Weck
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - M Mezouar
- European Synchrotron Radiation Facility, 6 Rue Jules Horowitz BP220, F-38043 Grenoble CEDEX, France
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29
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Ma S, Bao K, Tao Q, Xu C, Feng X, Zhao X, Ge Y, Zhu P, Cui T. Double-zigzag boron chain-enhanced Vickers hardness and manganese bilayers-induced high d-electron mobility in Mn 3B 4. Phys Chem Chem Phys 2019; 21:2697-2705. [PMID: 30663734 DOI: 10.1039/c8cp05870a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The D7b-type structure Mn3B4 was fabricated by high-temperature and high-pressure (HPHT) methods. Hardness examination yielded an asymptotic Vickers hardness of 16.3 GPa, which is much higher than that of Mn2B and MnB2. First principle calculations and XPS results demonstrated that double zigzag boron chains form a strong covalent skeletons, which enhances this structure's integrity with high hardness. Considering that the hardensses of MnB and Mn3B4 are higher than those of Mn2B and MnB2, zigzag and double zigzag boron backbones are superior to isolated boron and graphite-like boron layer backbones for achieving higher hardness. This situation also states that a higher boron content is not the sole factor for the higher hardness in the low boron content transition metal borides. Futhermore, the co-presence of metallic manganese bilayers contribute to the high d-electron mobility and generate electrical conductivity and antiferromagnetism in Mn3B4 which provide us with a new structure prototype to design general-purpose high hardness materials.
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Affiliation(s)
- Shuailing Ma
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, People's Republic of China.
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30
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Laniel D, Weck G, Loubeyre P. Direct Reaction of Nitrogen and Lithium up to 75 GPa: Synthesis of the Li3N, LiN, LiN2, and LiN5 Compounds. Inorg Chem 2018; 57:10685-10693. [DOI: 10.1021/acs.inorgchem.8b01325] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dominique Laniel
- CEA, DAM, DIF, F-91297 Arpajon, France
- CNES Launcher Directorate, 52 rue J. Hillairet, 75612 Paris cedex, France
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31
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Xia K, Gao H, Liu C, Yuan J, Sun J, Wang HT, Xing D. A novel superhard tungsten nitride predicted by machine-learning accelerated crystal structure search. Sci Bull (Beijing) 2018; 63:817-824. [PMID: 36658960 DOI: 10.1016/j.scib.2018.05.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 04/28/2018] [Accepted: 05/02/2018] [Indexed: 01/21/2023]
Abstract
Transition metal nitrides have been suggested to have both high hardness and good thermal stability with large potential application value, but so far stable superhard transition metal nitrides have not been synthesized. Here, with our newly developed machine-learning accelerated crystal structure searching method, we designed a superhard tungsten nitride, h-WN6, which can be synthesized at pressure around 65 GPa and quenchable to ambient pressure. This h-WN6 is constructed with single-bonded armchair-like N6 rings and presents ionic-like features, which can be formulated as W2.4+N62.4-. It has a band gap of 1.6 eV at 0 GPa and exhibits an abnormal gap broadening behavior under pressure. Excitingly, this h-WN6 is found to be the hardest among transition metal nitrides known so far (Vickers hardness around 57 GPa) and also has a very high melting temperature (around 1,900 K). Additionally, the good gravimetric (3.1 kJ/g) and volumetric (28.0 kJ/cm3) energy densities make this nitrogen-rich compound a potential high-energy-density material. These predictions support the designing rules and may stimulate future experiments to synthesize superhard and high-energy-density material.
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Affiliation(s)
- Kang Xia
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Hao Gao
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Cong Liu
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Jianan Yuan
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Jian Sun
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
| | - Hui-Tian Wang
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
| | - Dingyu Xing
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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32
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Walsh JPS, Freedman DE. High-Pressure Synthesis: A New Frontier in the Search for Next-Generation Intermetallic Compounds. Acc Chem Res 2018; 51:1315-1323. [PMID: 29812893 DOI: 10.1021/acs.accounts.8b00143] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The application of high pressure adds an additional dimension to chemical phase space, opening up an unexplored expanse bearing tremendous potential for discovery. Our continuing mission is to explore this new frontier, to seek out new intermetallic compounds and new solid-state bonding. Simple binary elemental systems, in particular those composed of pairs of elements that do not form compounds under ambient pressures, can yield novel crystalline phases under compression. Thus, high-pressure synthesis can provide access to solid-state compounds that cannot be formed with traditional thermodynamic methods. An emerging approach for the rapid exploration of composition-pressure-temperature phase space is the use of hand-held high-pressure devices known as diamond anvil cells (DACs). These devices were originally developed by geologists as a way to study minerals under conditions relevant to the earth's interior, but they possess a host of capabilities that make them ideal for high-pressure solid-state synthesis. Of particular importance, they offer the capability for in situ spectroscopic and diffraction measurements, thereby enabling continuous reaction monitoring-a powerful capability for solid-state synthesis. In this Account, we provide an overview of this approach in the context of research we have performed in the pursuit of new intermetallic compounds. We start with a discussion of pressure as a fundamental experimental variable that enables the formation of intermetallic compounds that cannot be isolated under ambient conditions. We then introduce the DAC apparatus and explain how it can be repurposed for use as a synthetic vessel with which to explore this phase space, going to extremes of pressure where no chemist has gone before. The remainder of the Account is devoted to discussions of recent experiments we have performed with this approach that have led to the discovery of novel intermetallic compounds in the Fe-Bi, Cu-Bi, and Ni-Bi systems, with a focus on the cutting-edge methods that made these experiments possible. We review the use of in situ laser heating at high pressure, which led to the discovery of FeBi2, the first binary intermetallic compound in the Fe-Bi system. Our work in the Cu-Bi system is described in the context of in situ experiments carried out in the DAC to map its high-pressure phase space, which revealed two intermetallic phases (Cu11Bi7 and CuBi). Finally, we review the discovery of β-NiBi, a novel high-pressure phase in the Ni-Bi system. We hope that this Account will inspire the next generation of solid-state chemists to boldly explore high-pressure phase space.
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Affiliation(s)
- James P. S. Walsh
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Danna E. Freedman
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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33
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Jin T, Sang X, Unocic RR, Kinch RT, Liu X, Hu J, Liu H, Dai S. Mechanochemical-Assisted Synthesis of High-Entropy Metal Nitride via a Soft Urea Strategy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707512. [PMID: 29687496 DOI: 10.1002/adma.201707512] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 02/26/2018] [Indexed: 06/08/2023]
Abstract
Crystalline high-entropy ceramics (CHC), a new class of solids that contain five or more elemental species, have attracted increasing interest because of their unique structure and potential applications. Up to now, only a couple of CHCs (e.g., high-entropy metal oxides and diborides) have been successfully synthesized. Here, a new strategy for preparing high-entropy metal nitride (HEMN-1) is proposed via a soft urea method assisted by mechanochemical synthesis. The as-prepared HEMN-1 possesses five highly dispersed metal components, including V, Cr, Nb, Mo, Zr, and simultaneously exhibits an interesting cubic crystal structure of metal nitrides. By taking advantage of these unique features, HEMN-1 can function as a promising candidate for supercapacitor applications. A specific capacitance of 78 F g-1 is achieved at a scan rate of 100 mV s-1 in 1 m KOH. In addition, such a facile synthetic strategy can be further extended to the fabrication of other types of HEMNs, paving the way for the synthesis of HEMNs with attractive properties for task-specific applications.
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Affiliation(s)
- Tian Jin
- State Key Laboratory of Chemical Engineering and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
- Department of Chemistry, The University of Tennessee, Knoxville, Knoxville, TN, 37996, USA
| | - Xiahan Sang
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Raymond R Unocic
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Richard T Kinch
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, San Juan, PR, 00931, USA
| | - Xiaofei Liu
- State Key Laboratory of Chemical Engineering and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jun Hu
- State Key Laboratory of Chemical Engineering and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Honglai Liu
- State Key Laboratory of Chemical Engineering and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Sheng Dai
- Department of Chemistry, The University of Tennessee, Knoxville, Knoxville, TN, 37996, USA
- Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
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34
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Arca E, Lany S, Perkins JD, Bartel C, Mangum J, Sun W, Holder A, Ceder G, Gorman B, Teeter G, Tumas W, Zakutayev A. Redox-Mediated Stabilization in Zinc Molybdenum Nitrides. J Am Chem Soc 2018; 140:4293-4301. [PMID: 29494134 DOI: 10.1021/jacs.7b12861] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We report on the theoretical prediction and experimental realization of new ternary zinc molybdenum nitride compounds. We used theory to identify previously unknown ternary compounds in the Zn-Mo-N systems, Zn3MoN4 and ZnMoN2, and to analyze their bonding environment. Experiments show that Zn-Mo-N alloys can form in broad composition range from Zn3MoN4 to ZnMoN2 in the wurtzite-derived structure, accommodating very large off-stoichiometry. Interestingly, the measured wurtzite-derived structure of the alloys is metastable for the ZnMoN2 stoichiometry, in contrast to the Zn3MoN4 stoichiometry, where ordered wurtzite is predicted to be the ground state. The formation of Zn3MoN4-ZnMoN2 alloy with wurtzite-derived crystal structure is enabled by the concomitant ability of Mo to change oxidation state from +VI in Zn3MoN4 to +IV in ZnMoN2, and the capability of Zn to contribute to the bonding states of both compounds, an effect that we define as "redox-mediated stabilization". The stabilization of Mo in both the +VI and +IV oxidation states is due to the intermediate electronegativity of Zn, which enables significant polar covalent bonding in both Zn3MoN4 and ZnMoN2 compounds. The smooth change in the Mo oxidation state between Zn3MoN4 and ZnMoN2 stoichiometries leads to a continuous change in optoelectronic properties-from resistive and semitransparent Zn3MoN4 to conductive and absorptive ZnMoN2. The reported redox-mediated stabilization in zinc molybdenum nitrides suggests there might be many undiscovered ternary compounds with one metal having an intermediate electronegativity, enabling significant covalent bonding, and another metal capable of accommodating multiple oxidation states, enabling stoichiometric flexibility.
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Affiliation(s)
- Elisabetta Arca
- National Renewable Energy Laboratory , Golden , Colorado 80401 , United States
| | - Stephan Lany
- National Renewable Energy Laboratory , Golden , Colorado 80401 , United States
| | - John D Perkins
- National Renewable Energy Laboratory , Golden , Colorado 80401 , United States
| | - Christopher Bartel
- Department of Chemical and Biological Engineering , University of Colorado Boulder , Boulder , Colorado 80309 , United States
| | - John Mangum
- Department of Metallurgical and Materials Engineering , Colorado School of Mines , Golden , Colorado 80401 , United States
| | - Wenhao Sun
- Materials Science Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Aaron Holder
- National Renewable Energy Laboratory , Golden , Colorado 80401 , United States.,Department of Chemical and Biological Engineering , University of Colorado Boulder , Boulder , Colorado 80309 , United States
| | - Gerbrand Ceder
- Materials Science Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.,Department of Materials Science and Engineering , University of California Berkeley , Berkeley , California 94720 , United States
| | - Brian Gorman
- Department of Metallurgical and Materials Engineering , Colorado School of Mines , Golden , Colorado 80401 , United States
| | - Glenn Teeter
- National Renewable Energy Laboratory , Golden , Colorado 80401 , United States
| | - William Tumas
- National Renewable Energy Laboratory , Golden , Colorado 80401 , United States
| | - Andriy Zakutayev
- National Renewable Energy Laboratory , Golden , Colorado 80401 , United States
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35
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Laniel D, Dewaele A, Garbarino G. High Pressure and High Temperature Synthesis of the Iron Pernitride FeN 2. Inorg Chem 2018; 57:6245-6251. [PMID: 29505253 DOI: 10.1021/acs.inorgchem.7b03272] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The high pressure chemistry of transition metals and nitrogen was recently discovered to be richer than previously thought, due to the synthesis of several transition metal pernitrides. Here, we explore the pressure-temperature domain of iron with an excess of nitrogen up to 91 GPa and 2200 K. Above 72 GPa and 2200 K, the iron pernitride FeN2 is produced in a laser-heated diamond anvil cell. This iron-nitrogen compound is the first with a N/Fe ratio greater than 1. The FeN2 samples were characterized from the maximum observed pressure down to ambient conditions by powder X-ray diffraction and Raman spectroscopy measurements. The crystal structure of FeN2 is resolved to be a Pnnm marcasite structure, analogously to other transition metal pernitrides. On the basis of the lattice's axial ratios and the recorded N-N vibrational modes of FeN2, a bond order of 1.5 for the nitrogen dimer is suggested. The bulk modulus of the iron pernitride is determined to be of K0 = 344(13) GPa, corresponding to an astounding increase of about 208% from pure iron. Upon decompression to ambient conditions, a partial structural phase transition to the theoretically predicted R3̅ m FeN2 is detected.
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Affiliation(s)
| | | | - Gaston Garbarino
- European Synchrotron Radiation Facility , 6 Rue Jules Horowitz BP220 , F-38043 Grenoble CEDEX, France
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36
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Yu R, Sun E, Jiao L, Cai Y, Wang H, Yao Y. Crystal structures of transition metal pernitrides predicted from first principles. RSC Adv 2018; 8:36412-36421. [PMID: 35558939 PMCID: PMC9088874 DOI: 10.1039/c8ra07814a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 10/19/2018] [Indexed: 11/21/2022] Open
Abstract
We have extensively explored the stable crystal structures of early-transition metal pernitrides (TMN2, TM = Ti, V, Cr, Mn, Zr, Nb, Mo, Hf, and Ta) at ambient and high pressures using effective CALYPSO global structure search algorithm in combination with first-principles calculations. We identified for the first time the ground-state structures of MnN2, TaN2, NbN2, VN2, ZrN2, and HfN2 pernitrides, and proposed their synthesis pressures. All predicted crystal structures contain encapsulated N2 dumbbells in which the two N atoms are singly bonded to a [N2]4− pernitride unit utilizing the electrons transferred from the transition metals. The strong nature of the single dinitrogen bond and transition metal–nitrogen charge transfer induce extraordinary mechanic properties in the predicted transition metal pernitrides including large bulk modulus and high Vickers hardness. Among the predictions the hardness of MnN2 is 36.6 GPa, suggesting that it is potentially a hard material. The results obtained in the present study are important to the understanding of structure–property relationships in transition metal pernitrides and will hopefully encourage future synthesis of these technologically important materials. We identified for the first time the ground-state structures of MnN2, TaN2, NbN2, VN2, ZrN2 and HfN2 pernitrides and proposed their synthesis pressures.![]()
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Affiliation(s)
- Rongmei Yu
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun
- P. R. China
| | - Ermiao Sun
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun
- P. R. China
| | - Liguang Jiao
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun
- P. R. China
| | - Yongmao Cai
- School of Science
- Northeast Electric Power University
- Jilin
- P. R. China
| | - Hongbo Wang
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun
- P. R. China
| | - Yansun Yao
- Department of Physics and Engineering Physics
- University of Saskatchewan
- Saskatoon
- Canada
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37
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Li Q, Wang J, Liu H. Theoretical research on novel orthorhombic tungsten dinitride from first principles calculations. RSC Adv 2018; 8:9272-9276. [PMID: 35541837 PMCID: PMC9078679 DOI: 10.1039/c8ra01099d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 02/24/2018] [Indexed: 11/21/2022] Open
Abstract
Tungsten nitrides have been intensely studied for technological applications owing to their unique mechanical, chemical, and thermal properties. Combining first-principles calculations with an unbiased structural searching method (CALYPSO), we uncovered a novel orthorhombic structure with a space group Cmc21 as the thermodynamically most stable phase for tungsten dinitride (WN2) between 46–113 GPa. The computed elastic constants and phonons reveal that the Cmc21-WN2 structure is dynamically stable at atmospheric pressure. Moreover, hardness calculations indicate that this structure is likely to become a hard material. Our current results may stimulate further experimental work on synthesizing these technologically important materials and improve the understanding of the pressure-induced phase transitions of other transition-metal light-element compounds. We uncovered a novel WN2 structure (Cmc21, 46–113 GPa) which is dynamically stable and ultra-incompressible at atmospheric pressure.![]()
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Affiliation(s)
- Qian Li
- College of Aeronautical Engineering
- Binzhou University
- Binzhou 256600
- China
- State Key Laboratory of Superhard Materials
| | - Jianyun Wang
- State Key Laboratory of Superhard Materials
- Jilin University
- Changchun 130012
- China
| | - Hanyu Liu
- Geophysical Laboratory
- Carnegie Institution of Washington
- Washington
- USA
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38
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Wang T, Yan Z, Michel C, Pera-Titus M, Sautet P. Trends and Control in the Nitridation of Transition-Metal Surfaces. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02096] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tao Wang
- Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
| | - Zhen Yan
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, 3966 Jin Du Road, Xin Zhuang Industrial
Zone, 201108 Shanghai, China
| | - Carine Michel
- Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
| | - Marc Pera-Titus
- Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS-Solvay, 3966 Jin Du Road, Xin Zhuang Industrial
Zone, 201108 Shanghai, China
| | - Philippe Sautet
- Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342 Lyon, France
- Department
of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
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39
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On the electronic structures and multiple aromaticity in the Ir 3 N 3 2+/0/2− clusters and the Ir 3 N 3 M −/0 or Ir 3 N 3 M 2 complexes with group IA/IIA metals. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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40
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Lu C, Li Q, Ma Y, Chen C. Extraordinary Indentation Strain Stiffening Produces Superhard Tungsten Nitrides. PHYSICAL REVIEW LETTERS 2017; 119:115503. [PMID: 28949242 DOI: 10.1103/physrevlett.119.115503] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Indexed: 06/07/2023]
Abstract
Transition-metal light-element compounds are a class of designer materials tailored to be a new generation of superhard solids, but indentation strain softening has hitherto limited their intrinsic load-invariant hardness to well below the 40 GPa threshold commonly set for superhard materials. Here we report findings from first-principles calculations that two tungsten nitrides, hP4-WN and hP6-WN_{2}, exhibit extraordinary strain stiffening that produces remarkably enhanced indentation strengths exceeding 40 GPa, raising exciting prospects of realizing the long-sought nontraditional superhard solids. Calculations show that hP4-WN is metallic both at equilibrium and under indentation, marking it as the first known intrinsic superhard metal. An x-ray diffraction pattern analysis indicates the presence of hP4-WN in a recently synthesized specimen. We elucidate the intricate bonding and stress response mechanisms for the identified structural strengthening, and the insights may help advance rational design and discovery of additional novel superhard materials.
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Affiliation(s)
- Cheng Lu
- Department of Physics and High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Nevada 89154, USA
| | - Quan Li
- College of Materials Science and Engineering, Jilin University, Changchun 130012, China
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Yanming Ma
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
| | - Changfeng Chen
- Department of Physics and High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Nevada 89154, USA
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41
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Quintero JH, Ospina R, Mello A, Escobar D, Restrepo-Parra E. Influence of nitrogen partial pressure on the microstructure and morphological properties of sputtered RuN coatings. SURF INTERFACE ANAL 2017. [DOI: 10.1002/sia.6256] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- J. H. Quintero
- Materiales Nanoestructurados y Biomodelación; Universidad de Medellín; Medellín Colombia
| | - R. Ospina
- Centro Brasilero de Pesquisas Fisica-CBPF; Rio de Janeiro Brazil
- Laboratorio de Física del Plasma; Universidad Nacional de Colombia; Manizales Colombia
- Escuela de Física, Centro de Materiales y Nanociencia; Universidad Industrial de Santander; Bucaramanga Colombia
| | - A. Mello
- Centro Brasilero de Pesquisas Fisica-CBPF; Rio de Janeiro Brazil
| | - D. Escobar
- Laboratorio de Física del Plasma; Universidad Nacional de Colombia; Manizales Colombia
| | - E. Restrepo-Parra
- Laboratorio de Física del Plasma; Universidad Nacional de Colombia; Manizales Colombia
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42
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Niwa K, Terabe T, Kato D, Takayama S, Kato M, Soda K, Hasegawa M. Highly Coordinated Iron and Cobalt Nitrides Synthesized at High Pressures and High Temperatures. Inorg Chem 2017; 56:6410-6418. [PMID: 28509545 DOI: 10.1021/acs.inorgchem.7b00516] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Highly coordinated iron and cobalt nitrides were successfully synthesized via direct chemical reaction between a transition metal and molecular nitrogen at pressures above approximately 30 GPa using a laser-heated diamond anvil cell. The synthesized novel transition metal nitrides were found to crystallize into the NiAs-type or marcasite-type structure. NiAs-type FeN could be quenched at ambient pressure, although it was gradually converted to the ZnS-type structure after the pressure was released. On the other hand, CoN was recovered with ZnS-type structure through a phase transition from NiAs-type structure at approximately a few gigapascals during decompression. Marcasite-type CoN2 was also synthesized at pressures above approximately 30 GPa. High-pressure in situ X-ray diffraction measurement showed that the zero-pressure bulk modulus of marcasite-type CoN2 is 216(18) GPa, which is comparable to that of RhN2. This indicates that the interatomic distance of the N-N dimer in marcasite-type CoN2 is short because of weak orbital interaction between cobalt and nitrogen atoms, as in RhN2. Surprisingly, a first-principles electronic band calculation suggests that the NiAs-type FeN and CoN and marcasite-type CoN2 exhibit metallic characteristics with magnetic moments of 3.4, 0.6, and 1.2 μB, respectively. The ferromagnetic NiAs-type structure originates from the anisotropic arrangement of transition atoms stacked along the c axis.
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Affiliation(s)
- Ken Niwa
- Department of Crystalline Materials Science, ‡Department of Quantum Engineering, Graduate School of Engineering, and §Nagoya Synchrotron Radiation Center, Nagoya University , Nagoya, Japan
| | - Toshiki Terabe
- Department of Crystalline Materials Science, ‡Department of Quantum Engineering, Graduate School of Engineering, and §Nagoya Synchrotron Radiation Center, Nagoya University , Nagoya, Japan
| | - Daiki Kato
- Department of Crystalline Materials Science, ‡Department of Quantum Engineering, Graduate School of Engineering, and §Nagoya Synchrotron Radiation Center, Nagoya University , Nagoya, Japan
| | - Shin Takayama
- Department of Crystalline Materials Science, ‡Department of Quantum Engineering, Graduate School of Engineering, and §Nagoya Synchrotron Radiation Center, Nagoya University , Nagoya, Japan
| | - Masahiko Kato
- Department of Crystalline Materials Science, ‡Department of Quantum Engineering, Graduate School of Engineering, and §Nagoya Synchrotron Radiation Center, Nagoya University , Nagoya, Japan
| | - Kazuo Soda
- Department of Crystalline Materials Science, ‡Department of Quantum Engineering, Graduate School of Engineering, and §Nagoya Synchrotron Radiation Center, Nagoya University , Nagoya, Japan
| | - Masashi Hasegawa
- Department of Crystalline Materials Science, ‡Department of Quantum Engineering, Graduate School of Engineering, and §Nagoya Synchrotron Radiation Center, Nagoya University , Nagoya, Japan
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43
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Jin Q, Jin B, Gong LF, Jin FK. Aromaticity of the bare osmium trimers and the bindings to group IA/IIA all-metal series. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2016.12.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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44
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Shen G, Mao HK. High-pressure studies with x-rays using diamond anvil cells. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2017; 80:016101. [PMID: 27873767 DOI: 10.1088/1361-6633/80/1/016101] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Pressure profoundly alters all states of matter. The symbiotic development of ultrahigh-pressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; and synchrotron x-ray techniques, to probe materials' properties in situ, has enabled the exploration of rich high-pressure (HP) science. In this article, we first introduce the essential concept of diamond anvil cell technology, together with recent developments and its integration with other extreme environments. We then provide an overview of the latest developments in HP synchrotron techniques, their applications, and current problems, followed by a discussion of HP scientific studies using x-rays in the key multidisciplinary fields. These HP studies include: HP x-ray emission spectroscopy, which provides information on the filled electronic states of HP samples; HP x-ray Raman spectroscopy, which probes the HP chemical bonding changes of light elements; HP electronic inelastic x-ray scattering spectroscopy, which accesses high energy electronic phenomena, including electronic band structure, Fermi surface, excitons, plasmons, and their dispersions; HP resonant inelastic x-ray scattering spectroscopy, which probes shallow core excitations, multiplet structures, and spin-resolved electronic structure; HP nuclear resonant x-ray spectroscopy, which provides phonon densities of state and time-resolved Mössbauer information; HP x-ray imaging, which provides information on hierarchical structures, dynamic processes, and internal strains; HP x-ray diffraction, which determines the fundamental structures and densities of single-crystal, polycrystalline, nanocrystalline, and non-crystalline materials; and HP radial x-ray diffraction, which yields deviatoric, elastic and rheological information. Integrating these tools with hydrostatic or uniaxial pressure media, laser and resistive heating, and cryogenic cooling, has enabled investigations of the structural, vibrational, electronic, and magnetic properties of materials over a wide range of pressure-temperature conditions.
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Affiliation(s)
- Guoyin Shen
- Geophysical Laboratory, Carnegie Institution of Washington, Washington DC, USA
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45
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Zhou Y, Xue H, Wang T, Guo H, Fan X, Song L, Xia W, Gong H, He Y, Wang J, He J. Tungsten Nitride-Cobalt Anchored in N-Doped Ordered Porous Carbon as an Efficient Oxygen Reduction Reaction Electrocatalyst. Chem Asian J 2016; 12:60-66. [DOI: 10.1002/asia.201601253] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Yan Zhou
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Hairong Xue
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Tao Wang
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Hu Guo
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Xiaoli Fan
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Li Song
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Wei Xia
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Hao Gong
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Yuping He
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Junwei Wang
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
| | - Jianping He
- College of Materials Science and Technology; Jiangsu Key Laboratory of Materials and Technology for Energy Conversion; Nanjing University of Aeronautics and Astronautics; 210016 Nanjing P.R. China), Fax
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46
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Zhang M, Cheng K, Yan H, Wei Q, Zheng B. Electronic bonding analyses and mechanical strengths of incompressible tetragonal transition metal dinitrides TMN 2 (TM = Ti, Zr, and Hf). Sci Rep 2016; 6:36911. [PMID: 27830728 PMCID: PMC5103277 DOI: 10.1038/srep36911] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/24/2016] [Indexed: 11/09/2022] Open
Abstract
Motivated by recent successful synthesis of transition metal dinitride TiN2, the electronic structure and mechanical properties of the discovered TiN2 and other two family members (ZrN2 and HfN2) have been thus fully investigated by using first-principles calculations to explore the possibilities and provide guidance for future experimental efforts. The incompressible nature of these tetragonal TMN2 (TM = Ti, Zr, and Hf) compounds has been demonstrated by the calculated elastic moduli, originating from the strong N-N covalent bonds that connect the TMN8 units. However, as compared with traditional fcc transition metal mononitride (TMN), the TMN2 possess a larger elastic anisotropy may impose certain limitations on possible applications. Further mechanical strength calculations show that tetragonal TMN2 exhibits a strong resistance against (100)[010] shear deformation prevents the indenter from making a deep imprint, whereas the peak stress values (below 12 GPa) of TMN2 along shear directions are much lower than those of TMN, showing their lower shear resistances than these known hard wear-resistant materials. The shear deformation of TMN2 at the atomic level during shear deformation can be attributed to the collapse of TMN8 units with breaking of TM-N bonds through the bonding evolution and electronic localization analyses.
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Affiliation(s)
- Meiguang Zhang
- College of Physics and Optoelectronic Technology, Nonlinear Research Institute, Baoji University of Arts and Sciences, Baoji 721016, China
| | - Ke Cheng
- College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China
| | - Haiyan Yan
- College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China
| | - Qun Wei
- School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China
| | - Baobing Zheng
- College of Physics and Optoelectronic Technology, Nonlinear Research Institute, Baoji University of Arts and Sciences, Baoji 721016, China
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47
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Howie RT, Turnbull R, Binns J, Frost M, Dalladay-Simpson P, Gregoryanz E. Formation of xenon-nitrogen compounds at high pressure. Sci Rep 2016; 6:34896. [PMID: 27748357 PMCID: PMC5066244 DOI: 10.1038/srep34896] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 09/19/2016] [Indexed: 01/21/2023] Open
Abstract
Molecular nitrogen exhibits one of the strongest known interatomic bonds, while xenon possesses a closed-shell electronic structure: a direct consequence of which renders both chemically unreactive. Through a series of optical spectroscopy and x-ray diffraction experiments, we demonstrate the formation of a novel van der Waals compound formed from binary Xe-N2 mixtures at pressures as low as 5 GPa. At 300 K and 5 GPa Xe(N2)2-I is synthesised, and if further compressed, undergoes a transition to a tetragonal Xe(N2)2-II phase at 14 GPa; this phase appears to be unexpectedly stable at least up to 180 GPa even after heating to above 2000 K. Raman spectroscopy measurements indicate a distinct weakening of the intramolecular bond of the nitrogen molecule above 60 GPa, while transmission measurements in the visible and mid-infrared regime suggest the metallisation of the compound at ~100 GPa.
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Affiliation(s)
- Ross T Howie
- Center for High Pressure Science &Technology Advanced Research, Shanghai, 201203, P.R. China
| | - Robin Turnbull
- Centre for Science at Extreme Conditions and School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
| | - Jack Binns
- Center for High Pressure Science &Technology Advanced Research, Shanghai, 201203, P.R. China
| | - Mungo Frost
- Centre for Science at Extreme Conditions and School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
| | - Philip Dalladay-Simpson
- Center for High Pressure Science &Technology Advanced Research, Shanghai, 201203, P.R. China
| | - Eugene Gregoryanz
- Centre for Science at Extreme Conditions and School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
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48
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Diverse ruthenium nitrides stabilized under pressure: a theoretical prediction. Sci Rep 2016; 6:33506. [PMID: 27627856 PMCID: PMC5024155 DOI: 10.1038/srep33506] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 08/30/2016] [Indexed: 11/28/2022] Open
Abstract
First-principles calculations were performed to understand the structural stability, synthesis routes, mechanical and electronic properties of diverse ruthenium nitrides. RuN with a new I-4m2 symmetry stabilized by pressure is found to be energetically preferred over the experimental NaCl-type and ZnS-type ones. The Pnnm-RuN2 is found to be stable above 1.1 GPa, in agreement with the experimental results. Specifically, new stoichiometries like RuN3 and RuN4 are proposed firstly to be thermodynamically stable, and the dynamical and mechanical stabilities of the newly predicted structures have been verified by checking their phonon spectra and elastic constants. A phase transition from P4/mmm-RuN4 to C2/c-RuN4 is also uncovered at 23.0 GPa. Drawn from bonding and band structure analysis, P4/mmm-RuN4 exhibits semi-metal-like behavior and becomes a semiconductor for the high-pressure C2/c-RuN4 phase. Meanwhile the P21/c-RuN3 shows metallic feature. Highly directional covalent N-N and Ru-N bonds are formed and dominating in N-enriched Ru nitrides, making them promising hard materials.
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49
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Li J, Fan X, Wei Y, Liu H, Li S, Zhao P, Chen G. Half-metallicity and ferromagnetism in penta-AlN2 nanostructure. Sci Rep 2016; 6:33060. [PMID: 27616459 PMCID: PMC5018739 DOI: 10.1038/srep33060] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 08/22/2016] [Indexed: 12/04/2022] Open
Abstract
We have performed a detailed first-principles study of the penta-AlN2 nanostructure in the Cairo pentagonal tiling geometry, which is dynamically stable due to the absence of imaginary mode in the calculated phonon spectrum. The formation energy and the fragment cohesive energy analyses, the molecular dynamics simulations, and the mechanical property studies also support the structural stability. It could withstand the temperature as high as 1400 K and sustain the strain up to 16.1% against structural collapse. The slightly buckled penta-AlN2 is found to be a ferromagnetic semiconductor. The strain of ~9% could drive the structural transition from the buckled to the planar. Interestingly, the strain of >7% would change the conducting properties to show half-metallic characters. Furthermore, it could be also used to continuously enhance the magnetic coupling strength, rendering penta-AlN2 as a robust ferromagnetic material. These studies shed light on the possibilities in synthesizing penta-AlN2 and present many unique properties, which are worth of further studying on both theory and experiment.
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Affiliation(s)
- Jiao Li
- Laboratory of Advanced Materials Physics and Nanodevices, School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
| | - Xinyu Fan
- Laboratory of Advanced Materials Physics and Nanodevices, School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
| | - Yanpei Wei
- Laboratory of Advanced Materials Physics and Nanodevices, School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
| | - Haiying Liu
- Laboratory of Advanced Materials Physics and Nanodevices, School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
| | - Shujuan Li
- Laboratory of Advanced Materials Physics and Nanodevices, School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
| | - Peng Zhao
- Laboratory of Advanced Materials Physics and Nanodevices, School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
| | - Gang Chen
- Laboratory of Advanced Materials Physics and Nanodevices, School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China
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50
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Li J, Fan X, Wei Y, Wang V, Chen G. Structural and electronic properties of B2N3 planar nanostructure: A computational investigation. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.08.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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