High pressure Raman spectroscopic study of $LiCsSO_4$: Pressure induced phase transitions and amorphization

Shashikala, MN and Chandrabhas, N and Jayaram, K and Jayaraman, A and Sood, AK (1994) High pressure Raman spectroscopic study of $LiCsSO_4$: Pressure induced phase transitions and amorphization. In: Journal of the Physics and Chemistry of Solids, 55 (1). pp. 107-112.

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Abstract

A Raman study of $LiCsSO_4$ as a function of pressure up to 26 GPa has revealed three distinct first order phase transitions at 2.0, 4.0 and 7.2 GPa. Above 10 GPa the external modes merge with the background and the internal moda broaden, suggesting the occurrence of a pressure-induced amorphization. The reappearance of external modes and the restoration of spectral features upon decompression shows a reversible transition from the amorphous to a crystalline phase.

Item Type:	Journal Article
Publication:	Journal of the Physics and Chemistry of Solids
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	13 Nov 2006
Last Modified:	19 Sep 2010 04:31
URI:	http://eprints.iisc.ac.in/id/eprint/8317

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