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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
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
in
Physical Review B (Condensed Matter)
volume
65
issue
6
article number
064101
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
2025-10-14 09:53:07
@article{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    = {{American Physical Society}},
  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}},
}