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Title: High-pressure phase transitions and pressure-induced amorphization in LiVO3
Authors: Shen, Z.X. 
Ong, C.W.
Kuok, M.H. 
Tang, S.H. 
Issue Date: 1995
Citation: Shen, Z.X., Ong, C.W., Kuok, M.H., Tang, S.H. (1995). High-pressure phase transitions and pressure-induced amorphization in LiVO3. Journal of Physics Condensed Matter 7 (5) : 939-946. ScholarBank@NUS Repository.
Abstract: Lithium metavanadate (LiVO3) single crystals have been studied by Raman spectroscopy under high pressure up to 200 kbar. Three phase transitions were observed and they are believed to be a series of transitions involving the breaking up of the infinite VO4 - chains into VO3 - ions of average symmetry C3v. On decompression, the LiVO3 transforms into an amorphous phase instead of reverting to the ambient crystalline phase, similarly to what has been observed for α-NaVO3. The difference in the behaviours between LiVO3 and α-NaVO3 on compression has been explained by the different sizes of the Li+ ion Na+ ions. The restoration of the virgin crystalline phase and the relinking of the VO4 - chains were observed after heating the reclaimed samples.
Source Title: Journal of Physics Condensed Matter
ISSN: 09538984
DOI: 10.1088/0953-8984/7/5/016
Appears in Collections:Staff Publications

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