High-pressure Raman and infrared study of $ZrV_2O_7$

Hemamala, ULC and El-Ghussein, F and Muthu, DVS and Andersen, Krogh AM and Carlson, S and Ouyang, L and Kruger, MB (2007) High-pressure Raman and infrared study of $ZrV_2O_7$. In: Solid State Communications, 141 (12). 680–684.

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Abstract

The room-temperature Raman and infrared spectra of zirconium vanadate $(ZrV_2O_7)$ were observed up to pressures of 12 GPa and 5.7 GPa, respectively. The frequencies of the optically active modes at ambient pressure were calculated using direct methods and compared with experimental values. Average mode Grüneisen parameters were calculated for the Raman and infrared active modes. Changes in the spectra under pressure indicate a phase transition at not, vert, similar \sim 1.6 GPa, which is consistent with the previously observed \alpha (cubic) to $_\beta$ (pseudo-tetragonal) phase transition, and changes in the spectra at not, vert, similar \sim 4 GPa are consistent with an irreversible transformation to an amorphous structure.

Item Type:	Journal Article
Publication:	Solid State Communications
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	E. Strain;High pressure;E.Inelastic light scattering;E. Light absorption and reflection
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	26 Apr 2007
Last Modified:	19 Sep 2010 04:37
URI:	http://eprints.iisc.ac.in/id/eprint/10688

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