Pressure-induced phase transitions in α-ZrMo2O8
(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
- Muthu, D. V S ; Chen, B. ; Wrobel, J. M. ; Andersen, A. M Krogh ; Carlson, S. LU and Kruger, M. B.
- organization
- publishing date
- 2002-02-01
- 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
- 2022-01-30 03:05:56
@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}}, }