High-pressure Raman and infrared study of ZrV2O7

Research output: Contribution to journalArticle

Abstract

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.

Details

Authors
  • U. L. C. Hemamala
  • F. El-Ghussein
  • D. V. S. Muthu
  • A. M. Krogh Andersen
  • Stefan Carlson
  • L. Ouyang
  • M. B. Kruger
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Natural Sciences
  • Physical Sciences

Keywords

  • light absorption and, inelastic light scattering, strain, high pressure, reflection
Original languageEnglish
Pages (from-to)680-684
JournalSolid State Communications
Volume141
Issue number12
Publication statusPublished - 2007
Publication categoryResearch
Peer-reviewedYes