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High-Pressure Synthesis of Non-Stoichiometric LixWO3 (0.5 ≤ x ≤ 1.0) with LiNbO3 Structure

1
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
2
Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
3
Department of Chemical and Biochemical Engineering, University of Delaware, Newark, DE 19716, USA
*
Author to whom correspondence should be addressed.
Inorganics 2019, 7(5), 63; https://doi.org/10.3390/inorganics7050063
Received: 21 April 2019 / Revised: 10 May 2019 / Accepted: 10 May 2019 / Published: 12 May 2019
(This article belongs to the Section Inorganic Solid-State Chemistry)
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Abstract

Compounds with the LiNbO3-type structure are important for a variety of applications, such as piezoelectric sensors, while recent attention has been paid to magnetic and electronic properties. However, all the materials reported are stoichiometric. This work reports on the high-pressure synthesis of lithium tungsten bronze LixWO3 with the LiNbO3-type structure, with a substantial non-stoichiometry (0.5 ≤ x ≤ 1). Li0.8WO3 exhibit a metallic conductivity. This phase is related to an ambient-pressure perovskite phase (0 ≤ x ≤ 0.5) by the octahedral tilting switching between aaa and a+a+a+. View Full-Text
Keywords: high pressure; LiNbO3; LiWO3; tungsten bronze high pressure; LiNbO3; LiWO3; tungsten bronze
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ishida, K.; Ikeuchi, Y.; Tassel, C.; Takatsu, H.; Brown, C.M.; Kageyama, H. High-Pressure Synthesis of Non-Stoichiometric LixWO3 (0.5 ≤ x ≤ 1.0) with LiNbO3 Structure. Inorganics 2019, 7, 63.

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