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|Title:||High-pressure phase transitions and pressure-induced amorphization in LiVO3|
|Authors:||Shen, Z.X. |
|Source:||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. https://doi.org/10.1088/0953-8984/7/5/016|
|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|
|Appears in Collections:||Staff Publications|
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