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Zhang Y, Zhang K, Yu J, Liu Z, Jiang S, Duan D, Huang X, Cui T. One-Dimensional Non-coplanar Nitrogen Chains in Manganese Tetranitride under High Pressure. J Phys Chem Lett 2024; 15:4256-4262. [PMID: 38606677 DOI: 10.1021/acs.jpclett.4c00861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Transition metal nitrides have great potential applications as incompressible and high energy density materials. Various polymeric nitrogen structures significantly affect their properties, contributing to their complex bonding modes and coordination conditions. Herein, we first report a new manganese polynitride MnN4 with bifacial trans-cis [N4]n chains by treating with high-pressure and high-temperature conditions in a diamond anvil cell. Our experiments reveal that MnN4 has a P-1 symmetry and could stabilize in the pressure range of 56-127 GPa. Detailed pressure-volume data and calculations of this phase indicate that MnN4 is a potential hard (255 GPa) and high energy density (2.97 kJ/g) material. The asymmetric interactions impel N1 and N4 atoms to hybridize to sp2-3, which causes distortions of [N4]n chains. This work discovers a new polynitride material, fills the gap for the study of manganese polynitride under high pressure, and offers some new insights into the formation of polymeric nitrogen structures.
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Affiliation(s)
- Yuchen Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Kexin Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Jingkun Yu
- Green Catalysis Center and college of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Zhengtao Liu
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Shuqing Jiang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Defang Duan
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Xiaoli Huang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Tian Cui
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
- School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
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2
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Sedgi I, Kozuch S. Quantum tunneling instability of the mythical hexazine and pentazine. Chem Commun (Camb) 2024; 60:2038-2041. [PMID: 38284898 DOI: 10.1039/d3cc05840a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
Through computational analysis we found that pentazine and hexazine, two hypothetical high-energy density materials, exhibit inherent instability due to quantum tunneling effects. This instability remains even near the absolute zero, and therefore they can be deemed as unsynthesizable. We propose substituents that could potentially stabilize pentazine, especially dimethylamine.
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Affiliation(s)
- Itzhak Sedgi
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 841051, Israel.
- Department of Analytical Chemistry, Nuclear Research Center Negev., P.O. Box 9001, Beer-Sheva, Israel
| | - Sebastian Kozuch
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 841051, Israel.
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3
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Ding C, Yuan J, Han Y, Zhang Z, Jia Q, Wang J, Sun J. Purely single-bonded spiral nitrogen chains stabilized by trivalent lanthanum ions. J Chem Phys 2023; 159:184703. [PMID: 37942868 DOI: 10.1063/5.0176226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 10/13/2023] [Indexed: 11/10/2023] Open
Abstract
Inspired by the single-bonded nitrogen chains stabilized by tetravalent cerium, pentavalent tantalum, and hexavalent tungsten atoms, we explored the possibility of single-bonded nitrogen polymorphs stabilized by trivalent lanthanum ions. To achieve this, we utilized the crystal structure search method on the phase diagram of binary La-N compounds. We identified three novel thermodynamically stable phases, the C2/c LaN3, P-1 LaN4, and P-1 LaN8. Among them, the C2/c phase with infinite helical poly-N6 chains becomes thermodynamically stable above 50 GPa. Each nitrogen atom in the poly-N6 chain acquires one extra electron, and the spiral chain is purely single-bonded. The C2/c phase has an indirect band gap of ∼1.6 eV at 60 GPa. Notably, the band gap exhibits non-monotonic behavior, decreases first and then increases with increasing pressure. This abnormal behavior is attributed to the significant bonding of two La-N bonds at around 35 GPa. Phonon spectrum calculations and AIMD simulations have confirmed that the C2/c phase can be quenched to ambient conditions with slight distortion, and it exhibits excellent detonation properties. Additionally, we also discovered armchair-like nitrogen chains in LaN4 and the armchair and zigzag-like mixed nitrogen chains in LaN8. These results provide valuable insights into the electronic and bonding properties of nitrides under high pressure and may have important implications for the design and development of novel functional materials.
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Affiliation(s)
- Chi Ding
- 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
- School of Physics and Electronic Information, Yantai University, Yantai 264005, China
| | - Yu Han
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Zhongwei Zhang
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Qiuhan Jia
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Junjie Wang
- 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
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4
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Wang B, Hilleke KP, Hajinazar S, Frapper G, Zurek E. Structurally Constrained Evolutionary Algorithm for the Discovery and Design of Metastable Phases. J Chem Theory Comput 2023; 19:7960-7971. [PMID: 37856841 DOI: 10.1021/acs.jctc.3c00594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Metastable materials are abundant in nature and technology, showcasing remarkable properties that inspire innovative materials design. However, traditional crystal structure prediction methods, which rely solely on energetic factors to determine a structure's fitness, are not suitable for predicting the vast number of potentially synthesizable phases that represent a local minimum corresponding to a state in thermodynamic equilibrium. Here, we present a new approach for the prediction of metastable phases with specific structural features and interface this method with the XtalOpt evolutionary algorithm. Our method relies on structural features that include the local crystalline order (e.g, the coordination number or chemical environment), and symmetry (e.g, Bravais lattice and space group) to filter the breeding pool of an evolutionary crystal structure search. The effectiveness of this approach is benchmarked on three known metastable systems: XeN8, with a two-dimensional polymeric nitrogen sublattice, brookite TiO2, and a high pressure BaH4 phase, which was recently characterized. Additionally, a newly predicted metastable melaminate salt, P1̅ WC3N6, was found to possess an energy that is lower than that of two phases proposed in a recent computational study. The method presented here could help in identifying the structures of compounds that have already been synthesized, and in developing new synthesis targets with desired properties.
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Affiliation(s)
- Busheng Wang
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000, United States
| | - Katerina P Hilleke
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000, United States
| | - Samad Hajinazar
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000, United States
| | - Gilles Frapper
- Applied Quantum Chemistry Group, E4 Team, IC2MP UMR 7285, Université de Poitiers, CNRS, Poitiers 86073, France
| | - Eva Zurek
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000, United States
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5
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Lin S, Xu M, Liang Y, Yuan X, Zhang Y, Wang F, Hao J, Li Y. Ambient-Pressure Recoverable Polynitrogen Solids Assembled by Pentazolate Rings with High Energy Density. Inorg Chem 2022; 61:15532-15539. [PMID: 36126121 DOI: 10.1021/acs.inorgchem.2c02240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Crystal structure predictions and first-principles calculations were used to predict three polynitrogen solids (aP8-N, aP12-N, and oP24-N) that possess competitive enthalpies as compared to the synthesized open-chain N8 phase at pressures in the range of 0-60 GPa. aP8-N, aP12-N, and oP24-N contain edge-shared, N2-linked, and N-bridged pentazolate rings and form molecular N8, molecular N12, and quasi-one-dimensional N∞ ribbons, respectively. The calculations of formation enthalpies show that the three polynitrogen solids can be synthesized by compressing cyclo-N5 salts in hydrogen-saturated environments. Molecular simulations suggest that the three polynitrogen solids have the ability of quench recoverability under ambient conditions once being synthesized at high pressure. With estimated energy densities in the range of 5.6-6.5 kJ/g, these three polynitrogen phases show notable promise for applications as high-energy-density materials.
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Affiliation(s)
- Shuyi Lin
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Meiling Xu
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Yiwei Liang
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Xuanhao Yuan
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Yiming Zhang
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Feilong Wang
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Jian Hao
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
| | - Yinwei Li
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
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6
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Kim YJ, Militzer B, Boates B, Bonev S, Celliers PM, Collins GW, Driver KP, Fratanduono DE, Hamel S, Jeanloz R, Rygg JR, Swift DC, Eggert JH, Millot M. Evidence for Dissociation and Ionization in Shock Compressed Nitrogen to 800 GPa. PHYSICAL REVIEW LETTERS 2022; 129:015701. [PMID: 35841582 DOI: 10.1103/physrevlett.129.015701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
Triple bonding in the nitrogen molecule (N_{2}) is among the strongest chemical bonds with a dissociation enthalpy of 9.8 eV/molecule. Nitrogen is therefore an excellent test bed for theoretical and numerical methods aimed at understanding how bonding evolves under the influence of the extreme pressures and temperatures of the warm dense matter regime. Here, we report laser-driven shock experiments on fluid molecular nitrogen up to 800 GPa and 4.0 g/cm^{3}. Line-imaging velocimetry measurements and impedance matching method with a quartz reference yield shock equation of state data of initially precompressed nitrogen. Comparison with numerical simulations using path integral Monte Carlo and density functional theory molecular dynamics reveals clear signatures of chemical dissociation and the onset of L-shell ionization. Combining data along multiple shock Hugoniot curves starting from densities between 0.76 and 1.29 g/cm^{3}, our study documents how pressure and density affect these changes in chemical bonding and provides benchmarks for future theoretical developments in this regime, with applications for planetary interior modeling, high energy density science, and inertial confinement fusion research.
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Affiliation(s)
- Yong-Jae Kim
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Burkhard Militzer
- Departments of Earth and Planetary Science and Astronomy, University of California, Berkeley, California 94720, USA
| | - Brian Boates
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Stanimir Bonev
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Peter M Celliers
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Gilbert W Collins
- Departments of Mechanical Engineering, Physics and Astronomy, and the Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - Kevin P Driver
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | | | - Sebastien Hamel
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Raymond Jeanloz
- Departments of Earth and Planetary Science and Astronomy, University of California, Berkeley, California 94720, USA
| | - J Ryan Rygg
- Departments of Mechanical Engineering, Physics and Astronomy, and the Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - Damian C Swift
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Jon H Eggert
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Marius Millot
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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7
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Yao Y. Theoretical methods for structural phase transitions in elemental solids at extreme conditions: statics and dynamics. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:363001. [PMID: 35724660 DOI: 10.1088/1361-648x/ac7a82] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
In recent years, theoretical studies have moved from a traditionally supporting role to a more proactive role in the research of phase transitions at high pressures. In many cases, theoretical prediction leads the experimental exploration. This is largely owing to the rapid progress of computer power and theoretical methods, particularly the structure prediction methods tailored for high-pressure applications. This review introduces commonly used structure searching techniques based on static and dynamic approaches, their applicability in studying phase transitions at high pressure, and new developments made toward predicting complex crystalline phases. Successful landmark studies for each method are discussed, with an emphasis on elemental solids and their behaviors under high pressure. The review concludes with a perspective on outstanding challenges and opportunities in the field.
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Affiliation(s)
- Yansun Yao
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
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8
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Grishakov KS, Degtyarenko NN. Low pressure metastable single-bonded solid nitrogen phases. Phys Chem Chem Phys 2022; 24:8351-8360. [PMID: 35332346 DOI: 10.1039/d2cp00620k] [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
Within the framework of the density functional theory, the possibility of the formation of single-bonded solid atomic nitrogen phases as a result of adiabatic compression of molecular and cluster nitrogen structures at zero temperature has been studied. It has been demonstrated that nitrogen clusters N8(C2v)-B, which are theoretically predicted as one of the promising candidates for high energy density materials, can transform under compression into a solid atomic phase with crystal lattice symmetry P21. The P21 phase is dynamically stable under decompression to zero pressure. It is shown that the ε-N2 molecular phase transforms under compression into a solid atomic phase with R3̄c symmetry, and retains a vibrationally stable crystal structure when the pressure is reduced to 30 GPa, transforming into a stable cluster form at lower pressures. The atoms in the P21 and R3̄c solid atomic phases are linked by single bonds; therefore, these structures can store a large amount of energy ≈1.4 eV per atom. A detailed comparison of the properties of new P21 and R3̄c solid atomic phases with other nitrogen crystal structures that are dynamically stable at low pressures has been carried out.
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Affiliation(s)
- Konstantin S Grishakov
- National Research Nuclear University "MEPhI", Kashirskoe Shosse 31, Moscow 115409, Russia. .,Research Institute for the Development of Scientific and Educational Potential of Youth, 14/55 Aviatorov St., Moscow, 119620, Russia
| | - Nikolay N Degtyarenko
- National Research Nuclear University "MEPhI", Kashirskoe Shosse 31, Moscow 115409, Russia.
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9
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Lu W, Hao K, Liu S, Lv J, Zhou M, Gao P. Pressure-stabilized high-energy-density material YN 10. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:135403. [PMID: 34991087 DOI: 10.1088/1361-648x/ac48c0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Polynitrogen compounds have been intensively studied for potential applications as high energy density materials, especially in energy and military fields. Here, using the swarm intelligence algorithm in combination with first-principles calculations, we systematically explored the variable stoichiometries of yttrium-nitrogen compounds on the nitrogen-rich regime at high pressure, where a new stable phase of YN10adoptingI4/msymmetry was discovered at the pressure of 35 GPa and showed metallic character from the analysis of electronic properties. In YN10, all the nitrogen atoms weresp2-hybridized in the form of N5ring. Furthermore, the gravimetric and volumetric energy densities were estimated to be 3.05 kJ g-1and 9.27 kJ cm-1respectively. Particularly, the calculated detonation velocity and pressure of YN10(12.0 km s-1, 82.7 GPa) was higher than that of TNT (6.9 km s-1, 19.0 GPa) and HMX (9.1 km s-1, 39.3 GPa), making it a potential candidate as a high-energy-density material.
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Affiliation(s)
- Wencheng Lu
- State Key Laboratory of Superhard Materials & Innovation Center for Computational Physics Methods and Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Kun Hao
- State Key Laboratory of Superhard Materials & Innovation Center for Computational Physics Methods and Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Siyu Liu
- State Key Laboratory of Superhard Materials & Innovation Center for Computational Physics Methods and Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Jian Lv
- State Key Laboratory of Superhard Materials & Innovation Center for Computational Physics Methods and Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Mi Zhou
- State Key Laboratory of Superhard Materials & Innovation Center for Computational Physics Methods and Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Pengyue Gao
- State Key Laboratory of Superhard Materials & Innovation Center for Computational Physics Methods and Software, College of Physics, Jilin University, Changchun 130012, People's Republic of China
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10
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Xu M, Li Y, Ma Y. Materials by design at high pressures. Chem Sci 2022; 13:329-344. [PMID: 35126967 PMCID: PMC8729811 DOI: 10.1039/d1sc04239d] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/08/2021] [Indexed: 01/29/2023] Open
Abstract
Pressure, a fundamental thermodynamic variable, can generate two essential effects on materials. First, pressure can create new high-pressure phases via modification of the potential energy surface. Second, pressure can produce new compounds with unconventional stoichiometries via modification of the compositional landscape. These new phases or compounds often exhibit exotic physical and chemical properties that are inaccessible at ambient pressure. Recent studies have established a broad scope for developing materials with specific desired properties under high pressure. Crystal structure prediction methods and first-principles calculations can be used to design materials and thus guide subsequent synthesis plans prior to any experimental work. A key example is the recent theory-initiated discovery of the record-breaking high-temperature superhydride superconductors H3S and LaH10 with critical temperatures of 200 K and 260 K, respectively. This work summarizes and discusses recent progress in the theory-oriented discovery of new materials under high pressure, including hydrogen-rich superconductors, high-energy-density materials, inorganic electrides, and noble gas compounds. The discovery of the considered compounds involved substantial theoretical contributions. We address future challenges facing the design of materials at high pressure and provide perspectives on research directions with significant potential for future discoveries.
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Affiliation(s)
- Meiling Xu
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University Xuzhou 221116 China
| | - Yinwei Li
- Laboratory of Quantum Functional Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University Xuzhou 221116 China
| | - Yanming Ma
- State Key Laboratory of Superhard Materials & International Center for Computational Method and Software, College of Physics, Jilin University Changchun 130012 China
- International Center of Future Science, Jilin University Changchun 130012 China
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11
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Zhang J, Niu C, Zhang H, Zhao J, Wang X, Zeng Z. Polymerization of Nitrogen in Nitrogen-Fluorine Compounds under Pressure. J Phys Chem Lett 2021; 12:5731-5737. [PMID: 34130459 DOI: 10.1021/acs.jpclett.1c01181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A wide range of polynitrogen species have attracted much attention because of their potential applications as high-energy-density materials. Until now, predicted polynitrogen was found to be negatively charged, with charge transfer from introduced atoms to nitrogen in nitrogen-bearing compounds. Using an evolutionary algorithm combined with first-principles calculations, stoichiometries and structures in nitrogen-fluorine compounds at pressures ranging from 0 to 200 GPa are investigated. In addition to two fluorine-rich compounds NF3 and NF5, two other compounds, NF and N6F, emerge with increasing pressure. N6F, as a nitrogen-rich compound, will become stable at pressures greater than 180 GPa with a positively charged nitrogen network. Above 120 GPa, the NF compound with polymeric zigzag nitrogen chains is discovered, and it is quenchable to the ambient conditions, acquiring the highest energy density of 5.38 kJ/g among reported binary covalent nitrogen compounds. These newly predicted N-F compounds are useful in understanding the chemistry of polynitrogen.
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Affiliation(s)
- Jie Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Caoping Niu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Hanxing Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Jing Zhao
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Xianlong Wang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Zhi Zeng
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
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12
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Duan D, Liu Z, Lin Z, Song H, Xie H, Cui T, Pickard CJ, Miao M. Multistep Dissociation of Fluorine Molecules under Extreme Compression. PHYSICAL REVIEW LETTERS 2021; 126:225704. [PMID: 34152171 DOI: 10.1103/physrevlett.126.225704] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/31/2021] [Accepted: 04/29/2021] [Indexed: 06/13/2023]
Abstract
All elements that form diatomic molecules, such as H_{2}, N_{2}, O_{2}, Cl_{2}, Br_{2}, and I_{2}, are destined to become atomic solids under sufficiently high pressure. However, as revealed by many experimental and theoretical studies, these elements show very different propensity and transition paths due to the balance of reduced volume, lone pair electrons, and interatomic bonds. The study of F under pressure can illuminate this intricate behavior since F, owing to its unique position on the periodic table, can be compared with H, with N and O, and also with other halogens. Nevertheless, F remains the only element whose solid structure evolution under pressure has not been thoroughly studied. Using a large-scale crystal structure search method based on first principles calculations, we find that, before reaching an atomic phase, F solid transforms first into a structure consisting of F_{2} molecules and F polymer chains and then into a structure consisting of F polymer chains and F atoms, a distinctive evolution with pressure that has not been seen in any other elements. Both intermediate structures are found to be metallic and become superconducting, a result that adds F to the elemental superconductors.
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Affiliation(s)
- Defang Duan
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Zhengtao Liu
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Ziyue Lin
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Hao Song
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Hui Xie
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
| | - Tian Cui
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
- Institute of High Pressure Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Chris J Pickard
- Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
- Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
| | - Maosheng Miao
- Department of Chemistry and Biochemistry, California State University, Northridge, California 91220, USA
- Department of Earth Science, University of California Santa Barbara, California 93106, USA
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13
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Conway LJ, Pickard CJ, Hermann A. Rules of formation of H-C-N-O compounds at high pressure and the fates of planetary ices. Proc Natl Acad Sci U S A 2021; 118:e2026360118. [PMID: 33931549 PMCID: PMC8126778 DOI: 10.1073/pnas.2026360118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The solar system's outer planets, and many of their moons, are dominated by matter from the H-C-N-O chemical space, based on solar system abundances of hydrogen and the planetary ices [Formula: see text]O, [Formula: see text], and [Formula: see text] In the planetary interiors, these ices will experience extreme pressure conditions, around 5 Mbar at the Neptune mantle-core boundary, and it is expected that they undergo phase transitions, decompose, and form entirely new compounds. While temperature will dictate the formation of compounds, ground-state density functional theory allows us to probe the chemical effects resulting from pressure alone. These structural developments in turn determine the planets' interior structures, thermal evolution, and magnetic field generation, among others. Despite its importance, the H-C-N-O system has not been surveyed systematically to explore which compounds emerge at high-pressure conditions, and what governs their stability. Here, we report on and analyze an unbiased crystal structure search among H-C-N-O compounds between 1 and 5 Mbar. We demonstrate that simple chemical rules drive stability in this composition space, which explains why the simplest possible quaternary mixture HCNO-isoelectronic to diamond-emerges as a stable compound and discuss dominant decomposition products of planetary ice mixtures.
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Affiliation(s)
- Lewis J Conway
- Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
- School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - Chris J Pickard
- Department of Materials Science & Metallurgy, University of Cambridge, Cambridge CB3 0FS, United Kingdom
- Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Andreas Hermann
- Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom;
- School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
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14
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Adeleke AA, Jossou EE, Ukoji NU, Adeniyi AO, Egbele PO. Properties of Alkaline-Earth-Metal Polynitrogen Ternary Materials at High Pressure. ACS OMEGA 2020; 5:26786-26794. [PMID: 33111005 PMCID: PMC7581264 DOI: 10.1021/acsomega.0c03880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 09/28/2020] [Indexed: 06/11/2023]
Abstract
We report the formation of cubic and tetragonal BaSrN3 at 100 GPa using an ab initio structure search method. Pressure ramping to 0 GPa reveals a reaction pressure threshold of 4.92 and 7.23 GPa for the cubic and tetragonal BaSrN3, respectively. The cubic phase is stabilized by coulombic interaction between the ions. Meanwhile, tetragonal BaSrN3 is stabilized through an expansion of the d-orbital in Ba and Sr atoms that is compensated by delocalization of π-electrons in N through reduction of π overlap. Elastic properties analysis suggests that both phases are mechanically stable. The structures also have high melting points as predicted using an empirical model, and all imaginary modes vanishes at about 2000 K. These results have significant implication for the design of cleaner and environmentally friendly high energy density materials.
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Affiliation(s)
- Adebayo A. Adeleke
- Department
of Physics and Engineering Physics, University
of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Ericmoore E. Jossou
- Department
of Mechanical Engineering, University of
Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Nnanna U. Ukoji
- Department
of Physics and Engineering Physics, University
of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Adebayo O. Adeniyi
- Department
of Physics and Engineering Physics, University
of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Peter O. Egbele
- Physics
and Electronics Unit, Department of Science Laboratory Technology, Federal Polytechnic Offa, PMB 420, Offa, Kwara State 250101, Nigeria
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15
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Cheng P, Yang X, Zhang X, Wang Y, Jiang S, Goncharov AF. Polymorphism of polymeric nitrogen at high pressures. J Chem Phys 2020; 152:244502. [DOI: 10.1063/5.0007453] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Peng Cheng
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
- University of Science and Technology of China, Hefei 230026, Anhui, People’s Republic of China
| | - Xue Yang
- School of Science, Changchun Institute of Technology, Changchun, Jilin 130012, China
| | - Xiao Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
- University of Science and Technology of China, Hefei 230026, Anhui, People’s Republic of China
| | - Yu Wang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
- University of Science and Technology of China, Hefei 230026, Anhui, People’s Republic of China
| | - Shuqing Jiang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
- Synergetic Extreme Condition User Facility, College of Physics, Jilin University, Changchun, Jilin 130012, China
| | - Alexander F. Goncharov
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
- University of Science and Technology of China, Hefei 230026, Anhui, People’s Republic of China
- Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA
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16
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Laniel D, Winkler B, Fedotenko T, Pakhomova A, Chariton S, Milman V, Prakapenka V, Dubrovinsky L, Dubrovinskaia N. High-Pressure Polymeric Nitrogen Allotrope with the Black Phosphorus Structure. PHYSICAL REVIEW LETTERS 2020; 124:216001. [PMID: 32530671 DOI: 10.1103/physrevlett.124.216001] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/01/2020] [Indexed: 06/11/2023]
Abstract
Studies of polynitrogen phases are of great interest for fundamental science and for the design of novel high energy density materials. Laser heating of pure nitrogen at 140 GPa in a diamond anvil cell led to the synthesis of a polymeric nitrogen allotrope with the black phosphorus structure, bp-N. The structure was identified in situ using synchrotron single-crystal x-ray diffraction and further studied by Raman spectroscopy and density functional theory calculations. The discovery of bp-N brings nitrogen in line with heavier pnictogen elements, resolves incongruities regarding polymeric nitrogen phases and provides insights into polynitrogen arrangements at extreme densities.
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Affiliation(s)
- Dominique Laniel
- Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, 95440 Bayreuth, Germany
| | - Bjoern Winkler
- Institut für Geowissenschaften, Abteilung Kristallographie, Johann Wolfgang Goethe-Universität Frankfurt, Altenhöferallee 1, D-60438 Frankfurt am Main, Germany
| | - Timofey Fedotenko
- Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, 95440 Bayreuth, Germany
| | - Anna Pakhomova
- Photon Science, Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany
| | - Stella Chariton
- Center for Advanced Radiation Sources, University of Chicago, Chicago, Illinois 60637, USA
| | - Victor Milman
- Dassault Systèmes BIOVIA, CB4 0WN Cambridge, United Kingdom
| | - Vitali Prakapenka
- Center for Advanced Radiation Sources, University of Chicago, Chicago, Illinois 60637, USA
| | - Leonid Dubrovinsky
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - Natalia Dubrovinskaia
- Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, 95440 Bayreuth, Germany
- Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83 Linköping, Sweden
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17
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Xia K, Yuan J, Zheng X, Liu C, Gao H, Wu Q, Sun J. Predictions on High-Power Trivalent Metal Pentazolate Salts. J Phys Chem Lett 2019; 10:6166-6173. [PMID: 31560550 DOI: 10.1021/acs.jpclett.9b02383] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High-energy-density materials (HEDMs) have been intensively studied for their significance in fundamental sciences and practical applications. Here, using the molecular crystal structure search method based on first-principles calculations, we have predicted a series of metastable energetic trivalent metal pentazolate salts MN15 (M= Al, Ga, Sc, and Y). These compounds have high energy densities, with the highest nitrogen content among the studied nitrides so far. Pentazolate N5- molecules stack up face-to-face and form wave-like patterns in the C2221 and Cc symmetries. The strong covalent bonding and very weak noncovalent interactions with nonbonded overlaps coexist in these ionic-like structures. We find MN15 molecular structures are mechanically stable up to high temperature (∼1000 K) and ambient pressure. More importantly, these trivalent metal pentazolate salts have high detonation pressure (∼80 GPa) and velocity (∼12 km/s). Their detonation pressures exceeding that of TNT and HMX make them good candidates for high-brisance green energetic materials.
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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
| | - Jianan Yuan
- National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210093 , China
| | - Xianxu Zheng
- National Key Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics , China Academy of Engineering Physics , Mianyang 621900 , Sichuan , China
| | - Cong Liu
- 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
| | - Qiang Wu
- National Key Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics , China Academy of Engineering Physics , Mianyang 621900 , Sichuan , China
| | - Jian Sun
- 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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18
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Zakai I, Grinstein D, Welner S, Gerber RB. Structures, Stability, and Decomposition Dynamics of the Polynitrogen Molecule N5+B(N3)4– and Its Dimer [N5+]2[B(N3)4–]2. J Phys Chem A 2019; 123:7384-7393. [DOI: 10.1021/acs.jpca.9b03704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Itai Zakai
- Institute of Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 9190401, Israel
| | - Dan Grinstein
- Institute of Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 9190401, Israel
| | - Shmuel Welner
- Institute of Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 9190401, Israel
| | - R. Benny Gerber
- Institute of Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 9190401, Israel
- Department of Chemistry, University of California, Irvine, California 92697, United States
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19
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Liu Z, Li D, Liu Y, Cui T, Tian F, Duan D. Metallic and anti-metallic properties of strongly covalently bonded energetic AlN 5 nitrides. Phys Chem Chem Phys 2019; 21:12029-12035. [PMID: 31135804 DOI: 10.1039/c9cp01723b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High pressure can stimulate numerous novel physical effects which are not observed under ambient conditions, such as the electronic redistribution and delocalization phenomenon in strongly covalently bonded nitrides. Through first principles simulations, we report a new N-rich aluminum nitride AlN5, which crystallizes with the space group P1[combining macron] at 20 GPa and then transforms into the I4[combining macron]2d phase at 60 GPa. We have identified and proved the delocalization effects of π electrons in the strongly covalent Lewis poly-nitrogen structure via the one-dimensional particle in a box mechanism, which contributes to the metallization and stability of the system. This implies that not all strongly covalently bonded systems with highly localized electrons exhibit nonmetallic properties in III-V main group nitrides. Furthermore, pressure results in the hybridization configuration mutation from sp2 in the P1[combining macron] phase to a mixture of sp2 and sp3 hybridization in the I4[combining macron]2d phase, which leads to phase transition from metal to insulator. With increasing pressure, the band gap increases abnormally, exhibiting anti-metallization induced by the strong hybridization. Interestingly, the P1[combining macron] and I4[combining macron]2d structures are simultaneously accompanied by a high energy density and hardness, which enable them to have a greater ability to resist elasticity, plastic deformation and external force destruction in potential applications. Their energy density and hardness are up to 3.29 kJ g-1 and 15.2 GPa in the P1[combining macron] phase but especially 6.14 kJ g-1 and 31.7 GPa in the I4[combining macron]2d phase.
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Affiliation(s)
- Zhao Liu
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, People's Republic of China.
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20
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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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21
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Jiao F, Zhang C. Origin of the considerably high thermal stability of cyclo-N5− containing salts at ambient conditions. CrystEngComm 2019. [DOI: 10.1039/c9ce00276f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionization, conjugation, hydrogen bonding, coordination bonding and π–π stacking consolidate the cyclo-N5− caged in salt crystals.
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Affiliation(s)
- Fangbao Jiao
- Institute of Chemical Materials
- China Academy of Engineering Physics (CAEP)
- Mianyang
- China
| | - Chaoyang Zhang
- Institute of Chemical Materials
- China Academy of Engineering Physics (CAEP)
- Mianyang
- China
- Beijing Computational Science Research Center
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22
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Tsuppayakorn-Aek P, Luo W, Watcharatharapong T, Ahuja R, Bovornratanaraks T. Structural prediction of host-guest structure in lithium at high pressure. Sci Rep 2018; 8:5278. [PMID: 29588486 PMCID: PMC5869677 DOI: 10.1038/s41598-018-23473-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 03/09/2018] [Indexed: 11/17/2022] Open
Abstract
Ab initio random structure searching (AIRSS) technique is used to identify the high-pressure phases of lithium (Li). We proposed the transition mechanism from the fcc to host-guest (HG) structures at finite temperature and high pressure. This complex structural phase transformation has been calculated using ab initio lattice dynamics with finite displacement method which confirms the dynamical harmonic stabilization of the HG structure. The electron distribution between the host-host atoms has also been investigated by electron localization function (ELF). The strongly localized electron of p bond has led to the stability of the HG structure. This remarkable result put the HG structure to be a common high-pressure structure among alkali metals.
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Affiliation(s)
- Prutthipong Tsuppayakorn-Aek
- Extreme Conditions Physics Research Laboratory (ECPRL) and Physics of Energy Materials Research Unit (PEMRU), Department of Physics, Faculty of Science, Chulalongkorn University, 10330, Bangkok, Thailand.,Thailand Center of Excellence in Physics, Commission on Higher Education, 328 Si Ayutthaya Road, Bangkok, 10400, Thailand.,Condensed Matter Theory Group, Department of Physics and Astronomy, Uppsala University, Box 516, 75120, Uppsala, Sweden
| | - Wei Luo
- Condensed Matter Theory Group, Department of Physics and Astronomy, Uppsala University, Box 516, 75120, Uppsala, Sweden
| | - Teeraphat Watcharatharapong
- Condensed Matter Theory Group, Department of Physics and Astronomy, Uppsala University, Box 516, 75120, Uppsala, Sweden
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Department of Physics and Astronomy, Uppsala University, Box 516, 75120, Uppsala, Sweden. .,Department of Materials and Engineering, Applied Materials Physics, Royal Institute of Technology (KTH), SE-100 44, Stockholm, Sweden.
| | - Thiti Bovornratanaraks
- Extreme Conditions Physics Research Laboratory (ECPRL) and Physics of Energy Materials Research Unit (PEMRU), Department of Physics, Faculty of Science, Chulalongkorn University, 10330, Bangkok, Thailand. .,Thailand Center of Excellence in Physics, Commission on Higher Education, 328 Si Ayutthaya Road, Bangkok, 10400, Thailand.
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23
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Li Y, Feng X, Liu H, Hao J, Redfern SAT, Lei W, Liu D, Ma Y. Route to high-energy density polymeric nitrogen t-N via He-N compounds. Nat Commun 2018; 9:722. [PMID: 29459672 PMCID: PMC5818478 DOI: 10.1038/s41467-018-03200-4] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 01/24/2018] [Indexed: 11/09/2022] Open
Abstract
Polymeric nitrogen, stabilized by compressing pure molecular nitrogen, has yet to be recovered to ambient conditions, precluding its application as a high-energy density material. Here we suggest a route for synthesis of a tetragonal polymeric nitrogen, denoted t-N, via He-N compounds at high pressures. Using first-principles calculations with structure searching, we predict a class of nitrides with stoichiometry HeN4 that are energetically stable (relative to a mixture of solid He and N2) above 8.5 GPa. At high pressure, HeN4 comprises a polymeric channel-like nitrogen framework filled with linearly arranged helium atoms. The nitrogen framework persists to ambient pressure on decompression after removal of helium, forming pure polymeric nitrogen, t-N. t-N is dynamically and mechanically stable at ambient pressure with an estimated energy density of ~11.31 kJ/g, marking it out as a remarkable high-energy density material. This expands the known polymeric forms of nitrogen and indicates a route to its synthesis.
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Affiliation(s)
- Yinwei Li
- School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Xiaolei Feng
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China.,Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK
| | - Hanyu Liu
- Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC, 20015, USA.
| | - Jian Hao
- School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China
| | - Simon A T Redfern
- Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK. .,Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai, 201203, China.
| | - Weiwei Lei
- Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC, 3216, Australia
| | - Dan Liu
- Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC, 3216, Australia
| | - Yanming Ma
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China.,International Center of Future Science, Jilin University, Changchun, 130012, China
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24
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González-Cataldo F, Davis S, Gutiérrez G. Melting curve of SiO2 at multimegabar pressures: implications for gas giants and super-Earths. Sci Rep 2016; 6:26537. [PMID: 27210813 PMCID: PMC4876395 DOI: 10.1038/srep26537] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 04/22/2016] [Indexed: 11/24/2022] Open
Abstract
Ultrahigh-pressure phase boundary between solid and liquid SiO2 is still quite unclear. Here we present predictions of silica melting curve for the multimegabar pressure regime, as obtained from first principles molecular dynamics simulations. We calculate the melting temperatures from three high pressure phases of silica (pyrite-, cotunnite-, and Fe2P-type SiO2) at different pressures using the Z method. The computed melting curve is found to rise abruptly around 330 GPa, an increase not previously reported by any melting simulations. This is in close agreement with recent experiments reporting the α-PbO2–pyrite transition around this pressure. The predicted phase diagram indicates that silica could be one of the dominant components of the rocky cores of gas giants, as it remains solid at the core of our Solar System’s gas giants. These results are also relevant to model the interior structure and evolution of massive super-Earths.
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Affiliation(s)
- Felipe González-Cataldo
- Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
| | - Sergio Davis
- Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile
| | - Gonzalo Gutiérrez
- Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
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25
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Qian GR, Niu H, Hu CH, Oganov AR, Zeng Q, Zhou HY. Diverse Chemistry of Stable Hydronitrogens, and Implications for Planetary and Materials Sciences. Sci Rep 2016; 6:25947. [PMID: 27193059 PMCID: PMC4872144 DOI: 10.1038/srep25947] [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: 04/08/2015] [Accepted: 03/29/2016] [Indexed: 12/24/2022] Open
Abstract
Nitrogen hydrides, e.g., ammonia (NH3), hydrazine (N2H4) and hydrazoic acid (HN3), are compounds of great fundamental and applied importance. Their high-pressure behavior is important because of their abundance in giant planets and because of the hopes of discovering high-energy-density materials. Here, we have performed a systematic investigation on the structural stability of N-H system in a pressure range up to 800 GPa through evolutionary structure prediction. Surprisingly, we found that high pressure stabilizes a series of previously unreported compounds with peculiar structural and electronic properties, such as the N4H, N3H, N2H and NH phases composed of nitrogen backbones, the N9H4 phase containing two-dimensional metallic nitrogen planes and novel N8H, NH2, N3H7, NH4 and NH5 molecular phases. Another surprise is that NH3 becomes thermodynamically unstable above ~460 GPa. We found that high-pressure chemistry of hydronitrogens is much more diverse than hydrocarbon chemistry at normal conditions, leading to expectations that N-H-O and N-H-O-S systems under pressure are likely to possess richer chemistry than the known organic chemistry. This, in turn, opens a possibility of nitrogen-based life at high pressure. The predicted phase diagram of the N-H system also provides a reference for synthesis of high-energy-density materials.
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Affiliation(s)
- Guang-Rui Qian
- Department of Geosciences, Center for Materials by Design, and Institute for Advanced Computational Science, State University of New York, Stony Brook, NY 11794-2100, USA
| | - Haiyang Niu
- Department of Geosciences, Center for Materials by Design, and Institute for Advanced Computational Science, State University of New York, Stony Brook, NY 11794-2100, USA
| | - Chao-Hao Hu
- Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, P.R. China
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, P.R. China
| | - Artem R. Oganov
- Department of Geosciences, Center for Materials by Design, and Institute for Advanced Computational Science, State University of New York, Stony Brook, NY 11794-2100, USA
- Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, 3 Nobel St., Moscow 143026, Russia
- Moscow Institute of Physics and Technology, 9 Institutskiy lane, Dolgoprudny city, Moscow Region 141700, Russia
- International Center for Materials Discovery, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, P.R. China
| | - Qingfeng Zeng
- International Center for Materials Discovery, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, P.R. China
| | - Huai-Ying Zhou
- Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, P.R. China
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26
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Hermann A, Guthrie M, Nelmes RJ, Loveday JS. Pressure-induced localisation of the hydrogen-bond network in KOH-VI. J Chem Phys 2015; 143:244706. [PMID: 26723701 DOI: 10.1063/1.4938260] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Using a combination of ab initio crystal structure prediction and neutron diffraction techniques, we have solved the full structure of KOH-VI at 7 GPa. Rather than being orthorhombic and proton-ordered as had previously be proposed, we find that this high-pressure phase of potassium hydroxide is tetragonal (space group I4/mmm) and proton disordered. It has an unusual hydrogen bond topology, where the hydroxyl groups form isolated hydrogen-bonded square planar (OH)4 units. This structure is stable above 6.5 GPa and, despite being macroscopically proton-disordered, local ice rules enforce microscopic order of the hydrogen bonds. We suggest the use of this novel type of structure to study concerted proton tunneling in the solid state, while the topology of the hydrogen bond network could conceivably be exploited in data storage applications based solely on the manipulations of hydrogen bonds. The unusual localisation of the hydrogen bond network under applied pressure is found to be favored by a more compact packing of the constituents in a distorted cesium chloride structure.
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Affiliation(s)
- Andreas Hermann
- Centre for Science at Extreme Conditions and SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
| | - Malcolm Guthrie
- Centre for Science at Extreme Conditions and SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
| | - Richard J Nelmes
- Centre for Science at Extreme Conditions and SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
| | - John S Loveday
- Centre for Science at Extreme Conditions and SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
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27
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Plašienka D, Martoňák R. Transformation pathways in high-pressure solid nitrogen: from molecular N2 to polymeric cg-N. J Chem Phys 2015; 142:094505. [PMID: 25747092 DOI: 10.1063/1.4908161] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The transformation pathway in high-pressure solid nitrogen from N2 molecular state to polymeric cg-N phase was investigated by means of ab initio molecular dynamics and metadynamics simulations. In our study, we observed a transformation mechanism starting from molecular Immm phase that initiated with formation of trans-cis chains. These chains further connected within layers and formed a chain-planar state, which we describe as a mixture of two crystalline structures--trans-cis chain phase and planar phase, both with Pnma symmetry. This mixed state appeared in molecular dynamics performed at 120 GPa and 1500 K and in the metadynamics run at 110 GPa and 1500 K, where the chains continued to reorganize further and eventually formed cg-N. During separate simulations, we also found two new phases--molecular P2(1)/c and two-three-coordinated chain-like Cm. The transformation mechanism heading towards cg-N can be characterized as a progressive polymerization process passing through several intermediate states of variously connected trans-cis chains. In the final stage of the transformation chains in the layered form rearrange collectively and develop new intraplanar as well as interplanar bonds leading to the geometry of cg-N. Chains with alternating trans and cis conformation were found to be the key entity--structural pattern governing the dynamics of the simulated molecular-polymeric transformation in compressed nitrogen.
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Affiliation(s)
- Dušan Plašienka
- Department of Experimental Physics, Comenius University, Mlynská Dolina F2, 842 48 Bratislava, Slovakia
| | - Roman Martoňák
- Department of Experimental Physics, Comenius University, Mlynská Dolina F2, 842 48 Bratislava, Slovakia
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Tomasino D, Kim M, Smith J, Yoo CS. Pressure-induced symmetry-lowering transition in dense nitrogen to layered polymeric nitrogen (LP-N) with colossal Raman intensity. PHYSICAL REVIEW LETTERS 2014; 113:205502. [PMID: 25432047 DOI: 10.1103/physrevlett.113.205502] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Indexed: 06/04/2023]
Abstract
We present the discovery of a novel nitrogen phase synthesized using laser-heated diamond anvil cells at pressures between 120-180 GPa well above the stability field of cubic gauche (cg)-N. This new phase is characterized by its singly bonded, layered polymeric (LP) structure similar to the predicted Pba2 and two colossal Raman bands (at ∼1000 and 1300 cm^{-1} at 150 GPa), arising from two groups of highly polarized nitrogen atoms in the bulk and surface of the layer, respectively. The present result also provides a new constraint for the nitrogen phase diagram, highlighting an unusual symmetry-lowering 3D cg-N to 2D LP-N transition and thereby the enhanced electrostatic contribution to the stabilization of this densely packed LP-N (ρ=4.85 g/cm^{3} at 120 GPa).
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Affiliation(s)
- Dane Tomasino
- Department of Chemistry and Institute for Shock Physics, Washington State University, Pullman, Washington 99164, USA
| | - Minseob Kim
- Department of Chemistry and Institute for Shock Physics, Washington State University, Pullman, Washington 99164, USA
| | - Jesse Smith
- High Pressure Collaborating Access Team at Advanced Photon Source, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, USA
| | - Choong-Shik Yoo
- Department of Chemistry and Institute for Shock Physics, Washington State University, Pullman, Washington 99164, USA
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Zhang S, Wang Q, Kawazoe Y, Jena P. Three-Dimensional Metallic Boron Nitride. J Am Chem Soc 2013; 135:18216-21. [DOI: 10.1021/ja410088y] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shunhong Zhang
- Center
for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, China
| | - Qian Wang
- Center
for Applied Physics and Technology, College of Engineering, Peking University, Beijing 100871, China
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Yoshiyuki Kawazoe
- Institute
for Material Research, Tohoku University, Sendai, 980-8577, Japan
| | - Puru Jena
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
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