Lithium metavanadate (LiVO3) is a typical ionic conductor with a monoclinic pyroxene-type structure at ambient conditions. Here, we investigated the structural and electrical transport properties of LiVO3 under high pressures by combining in situ Raman scattering, x-ray diffraction, impedance spectroscopy measurements, and first-principles calculations. All experimental and theoretical results demonstrated that LiVO3 undergoes a structural transition from monoclinic to triclinic phase at around 5 GPa, during which partial VO4 tetrahedrons are transformed into a VO6 octahedron. The ion migration of LiVO3 was significantly suppressed above 5 GPa and an ionic–electronic transition was discovered at 10.7 GPa. The structural evolution involving coordination environment change results in an electron density rearrangement around Li and O atoms, which are responsible for the transformation of electrical transport mechanism in LiVO3 under high pressures. These results expand our understanding of the electrical and structural properties of LiVO3 under high pressures and provide insights into the pressure effects on ion migration in solid electrolytes.
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1 January 2024
Research Article|
January 02 2024
Coordination environment-induced ionic–electronic transport transition in LiVO3 Available to Purchase
Xingxing Zhao
;
Xingxing Zhao
(Conceptualization, Formal analysis, Investigation, Methodology, Writing – original draft)
1
State Key Laboratory of Superhard Materials, Institute of Physics, Jilin University
, Changchun 130012, China
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Zhenfang Xing;
Zhenfang Xing
(Investigation)
1
State Key Laboratory of Superhard Materials, Institute of Physics, Jilin University
, Changchun 130012, China
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Liang Ma;
Liang Ma
(Resources, Software)
2
Key Laboratory of Materials Physics (Ministry of Education), School of Physics and Microelectronics, Zhengzhou University
, Zhengzhou 450052, China
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Di Peng
;
Di Peng
(Investigation)
3
Center for High Pressure Science and Technology Advanced Research
, Shanghai 201203, China
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Jinqun Cai
;
Jinqun Cai
(Formal analysis, Methodology, Software)
1
State Key Laboratory of Superhard Materials, Institute of Physics, Jilin University
, Changchun 130012, China
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Yonghao Han
;
Yonghao Han
(Conceptualization, Funding acquisition, Project administration, Software, Supervision, Validation, Writing – review & editing)
1
State Key Laboratory of Superhard Materials, Institute of Physics, Jilin University
, Changchun 130012, China
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Lin Zhao
Lin Zhao
a)
(Conceptualization, Supervision, Validation, Writing – review & editing)
1
State Key Laboratory of Superhard Materials, Institute of Physics, Jilin University
, Changchun 130012, China
a)Author to whom correspondence should be addressed: [email protected]
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Xingxing Zhao
1
Zhenfang Xing
1
Liang Ma
2
Di Peng
3
Jinqun Cai
1
Yonghao Han
1
Lin Zhao
1,a)
1
State Key Laboratory of Superhard Materials, Institute of Physics, Jilin University
, Changchun 130012, China
2
Key Laboratory of Materials Physics (Ministry of Education), School of Physics and Microelectronics, Zhengzhou University
, Zhengzhou 450052, China
3
Center for High Pressure Science and Technology Advanced Research
, Shanghai 201203, China
a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 124, 012102 (2024)
Article history
Received:
November 09 2023
Accepted:
December 17 2023
Citation
Xingxing Zhao, Zhenfang Xing, Liang Ma, Di Peng, Jinqun Cai, Yonghao Han, Lin Zhao; Coordination environment-induced ionic–electronic transport transition in LiVO3. Appl. Phys. Lett. 1 January 2024; 124 (1): 012102. https://doi.org/10.1063/5.0186859
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