Pressure-induced phase transitions in α-ZrMo2O8

Research output: Contribution to journalArticle

Abstract

We report high-pressure Raman, infrared (IR), and optical-absorption spectra of α-ZrMo2O8 (trigonal) up to 38 GPa at room temperature. The spectroscopic studies are consistent with diffraction results that show that α-ZrMo2O8 transforms into δ-ZrMo2O8 (monoclinic) at about 1 GPa and the δ phase converts to the ε phase (triclinic) 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.

Details

Authors
  • D. V S Muthu
  • B. Chen
  • J. M. Wrobel
  • A. M Krogh Andersen
  • S. Carlson
  • M. B. Kruger
Organisations
External organisations
  • University of Missouri-Kansas City
Original languageEnglish
Article number064101
Pages (from-to)641011-641015
Number of pages5
JournalPhysical Review B (Condensed Matter)
Volume65
Issue number6
Publication statusPublished - 2002 Feb 1
Publication categoryResearch
Peer-reviewedYes