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High-pressure Raman and infrared study of ZrV2O7

In English

Författare

  • 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.

Publiceringsår

2007

Språk

Engelska

Sidor

680-684

Publikation/Tidskrift/Serie

Solid State Communications

Volym

141

Issue

12

Dokumenttyp

Artikel i tidskrift

Förlag

Pergamon Press Ltd.

Ämne

  • Natural Sciences
  • Physical Sciences

Nyckelord

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

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1879-2766