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High-pressure Raman and infrared study of ZrV2O7

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Author

  • U. L. C. Hemamala
  • F. El-Ghussein
  • D. V. S. Muthu
  • A. M. Krogh Andersen
  • Stefan Carlson
  • L. Ouyang
  • M. B. Kruger

Summary, in English

The room-temperature Raman and infrared spectra of zirconium vanadate (ZrV2O7) 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 Gruneisen parameters were calculated for the Raman and infrared active modes. Changes in the spectra under pressure indicate a phase transition at similar to 1.6 GPa, which is consistent with the previously observed a (cubic) to (pseudo-tetragonal) phase transition, and changes in the spectra at similar to 4 GPa are consistent with an irreversible transformation to an amorphous structure. (C) 2007 Elsevier Ltd. All rights reserved.

Department/s

Publishing year

2007

Language

English

Pages

680-684

Publication/Series

Solid State Communications

Volume

141

Issue

12

Document type

Journal article

Publisher

Pergamon Press Ltd.

Topic

  • Natural Sciences
  • Physical Sciences

Keywords

  • light absorption and
  • inelastic light scattering
  • strain
  • high pressure
  • reflection

Status

Published

ISBN/ISSN/Other

  • ISSN: 1879-2766