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Pressure-induced phase transitions in α-ZrMo2O8

Muthu, D. V S; Chen, B.; Wrobel, J. M.; Andersen, A. M Krogh; Carlson, S. LU and Kruger, M. B. (2002) In Physical Review B (Condensed Matter) 65(6). p.641011-641015
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.

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author
organization
publishing date
type
Contribution to journal
publication status
published
in
Physical Review B (Condensed Matter)
volume
65
issue
6
pages
5 pages
publisher
American Physical Society
external identifiers
  • Scopus:18244421755
ISSN
0163-1829
language
English
LU publication?
yes
id
fb3bcacf-6974-4b14-8490-e6720457ee2c
date added to LUP
2016-05-04 11:47:38
date last changed
2016-11-02 15:14:34
@misc{fb3bcacf-6974-4b14-8490-e6720457ee2c,
  abstract     = {<p>We report high-pressure Raman, infrared (IR), and optical-absorption spectra of α-ZrMo<sub>2</sub>O<sub>8</sub> (trigonal) up to 38 GPa at room temperature. The spectroscopic studies are consistent with diffraction results that show that α-ZrMo<sub>2</sub>O<sub>8</sub> transforms into δ-ZrMo<sub>2</sub>O<sub>8</sub> (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. ZrMo<sub>2</sub>O<sub>8</sub> changes from transparent at 5 GPa to yellow at 10 GPa, red at 18 GPa, and at about 30 GPa it becomes opaque.</p>},
  author       = {Muthu, D. V S and Chen, B. and Wrobel, J. M. and Andersen, A. M Krogh and Carlson, S. and Kruger, M. B.},
  issn         = {0163-1829},
  language     = {eng},
  month        = {02},
  number       = {6},
  pages        = {641011--641015},
  publisher    = {ARRAY(0x897a970)},
  series       = {Physical Review B (Condensed Matter)},
  title        = {Pressure-induced phase transitions in α-ZrMo<sub>2</sub>O<sub>8</sub>},
  volume       = {65},
  year         = {2002},
}