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Compression of scheelite-type SrMoO4 under quasi-hydrostatic conditions: Redefining the high-pressure structural sequence
dc.contributor.author | Errandonea, Daniel | |
dc.contributor.author | Gracia, Lourdes | |
dc.contributor.author | Lacomba Perales, R. | |
dc.contributor.author | Polian, A. | |
dc.contributor.author | Chervin, J. C. | |
dc.date.accessioned | 2014-03-12T11:23:45Z | |
dc.date.available | 2014-03-12T11:23:45Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | ERRANDONEA, D., et al. Compression of scheelite-type SrMoO4 under quasi-hydrostatic conditions: Redefining the high-pressure structural sequence. Journal of Applied Physics, 2013, 113.12: 123510. | ca_CA |
dc.identifier.uri | http://hdl.handle.net/10234/86791 | |
dc.description.abstract | The high-pressure behavior of tetragonal SrMoO4 was analyzed by Raman and optical-absorption measurements. Pressures up to 46.1 GPa were generated using diamond-anvil cells and Ne or N2 as quasi-hydrostatic pressure-transmitting media. A reversible phase transition is observed at 17.7 GPa. A second transition is found at 28.8 GPa and the onset of a third one at 44.2 GPa. The pressure dependence of Raman-active modes is reported for the different phases and the pressure evolution of the fundamental band-gap reported for the low-pressure phase. The observed changes in the Raman spectra contradict the structural sequence determined from previous experiments performed under higher non-hydrostaticity. This fact suggests that deviatoric stresses can influence pressure-driven transitions in scheelite-type oxides. We also report total-energy, lattice-dynamics, and band-structure calculations. They reproduce accurately the behavior of the physical properties of the low-pressure phase and predict the occurrence of phase transitions at pressures similar to experimental transition pressures. According to theory, the high-pressure phases have monoclinic and orthorhombic structures, which are much more compact than tetragonal scheelite. Theoretical results and experiments are compared with previous studies. | ca_CA |
dc.format.extent | 11 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | American Institute of Physics | ca_CA |
dc.relation.isPartOf | Journal of Applied Physics, 2013, 113,12 | ca_CA |
dc.rights | © 2013 American Institute of Physics | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | Crystal structure | ca_CA |
dc.subject | Raman spectra | ca_CA |
dc.subject | Molybdenum | ca_CA |
dc.subject | Phase transitions | ca_CA |
dc.subject | Band gap | ca_CA |
dc.subject | High pressure | ca_CA |
dc.subject | X-ray diffraction | ca_CA |
dc.subject | Phonons | ca_CA |
dc.subject | Diamond anvil cells | ca_CA |
dc.subject | Elastic moduli | ca_CA |
dc.title | Compression of scheelite-type SrMoO4 under quasi-hydrostatic conditions: Redefining the high-pressure structural sequence | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1063/1.4798374 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | http://scitation.aip.org/content/aip/journal/jap/113/12/10.1063/1.4798374 | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
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