Pressure-induced phase transitions in alpha-ZrMo2O8
Författare
Summary, in English
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.
Avdelning/ar
Publiceringsår
2002
Språk
Engelska
Publikation/Tidskrift/Serie
Physical Review B (Condensed Matter and Materials Physics)
Volym
65
Issue
6
Dokumenttyp
Artikel i tidskrift
Förlag
American Physical Society
Ämne
- Inorganic Chemistry
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1098-0121