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Li Z, Cho Y, Li X, Li X, Aimi A, Inaguma Y, Alonso JA, Fernandez-Diaz MT, Yan J, Downer MC, Henkelman G, Goodenough JB, Zhou J. New Mechanism for Ferroelectricity in the Perovskite Ca2–xMnxTi2O6 Synthesized by Spark Plasma Sintering. J Am Chem Soc 2018; 140:2214-2220. [DOI: 10.1021/jacs.7b11219] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zongyao Li
- Material
Science and Engineering Program, Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Yujin Cho
- Department
of Physics, University of Texas at Austin, Austin, Texas 78712, United States
| | - Xiang Li
- Material
Science and Engineering Program, Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Xinyu Li
- Material
Science and Engineering Program, Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Akihisa Aimi
- Department
of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Yoshiyuki Inaguma
- Department
of Chemistry, Faculty of Science, Gakushuin University, 1-5-1 Mejiro,
Toshima-ku, Tokyo 171-8588, Japan
| | - Jose A. Alonso
- Instituto
de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28094 Madrid, Spain
| | | | - Jiaqiang Yan
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Michael C. Downer
- Department
of Physics, University of Texas at Austin, Austin, Texas 78712, United States
| | - Graeme Henkelman
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - John B. Goodenough
- Material
Science and Engineering Program, Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Jianshi Zhou
- Material
Science and Engineering Program, Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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Li P, Ren X, Guo GC, He L. The origin of hyperferroelectricity in LiBO 3 (B = V, Nb, Ta, Os). Sci Rep 2016; 6:34085. [PMID: 27694996 PMCID: PMC5046123 DOI: 10.1038/srep34085] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 09/05/2016] [Indexed: 11/30/2022] Open
Abstract
The electronic and structural properties of LiBO3 (B = V, Nb, Ta, Os) are investigated via first-principles methods. We show that LiBO3 belong to the recently proposed hyperferroelectrics (hyperFEs), i.e., they all have unstable longitudinal optic phonon modes. Especially, the ferroelectric-like instability in the metal LiOsO3, whose optical dielectric constant goes to infinity, is a limiting case of hyperFEs. Via an effective Hamiltonian, we further show that, in contrast to normal proper ferroelectricity, in which the ferroelectric instability usually comes from long-range coulomb interactions, the hyperFE instability is due to the structure instability driven by short-range interactions. This could happen in systems with large ion size mismatches, which therefore provides a useful guidance in searching for novel hyperFEs.
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Affiliation(s)
- Pengfei Li
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China.,Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China
| | - Xinguo Ren
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China.,Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China
| | - Guang-Can Guo
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China.,Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China
| | - Lixin He
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China.,Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China
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