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Pressure-induced phase transitions in alpha-ZrMo2O8

Muthu, DVS and Chen, B and Wrobel, JM and Andersen, Krogh AM and Carlson, S and Kruger, MB (2002) Pressure-induced phase transitions in alpha-ZrMo2O8. In: Physical Review B: Condensed Matter and Materials Physics, 65 (6). 064101.

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Official URL: http://prb.aps.org/abstract/PRB/v65/i6/e064101

Abstract

We report high-pressure Raman, infrared (IR), and optical-absorption spectra of alpha-ZrMo2O8 (trigonal) up to 38 GPa at room temperature. The spectroscopic studies are consistent with diffraction results that show that alpha-ZrMo2O8 transforms into delta-ZrMo2O8 (monoclinic) at about 1 GPa and the delta phase converts to the epsilon phase (trielinic) at about 2.0 GPa. Optical-absorption measurements give an estimate of the band gap of about 0.6 eV at the lowest pressure. Band-gap changes with pressure are confirmed with visual observations. ZrMo2O8 changes from transparent at 5 GPa to yellow at 10 GPa, red at 18 GPa, and at about 30 GPa it becomes opaque.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The American Physical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 22 Jul 2011 09:36
Last Modified: 22 Jul 2011 09:36
URI: http://eprints.iisc.ernet.in/id/eprint/39365

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