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High-pressure study of the behavior of mineral barite by x-ray diffraction
dc.contributor.author | Santamaría Pérez, D. | |
dc.contributor.author | Gracia, Lourdes | |
dc.contributor.author | Garbarino, G. | |
dc.contributor.author | Beltran, Armando | |
dc.contributor.author | Chulia-Jordan, Raquel | |
dc.contributor.author | Gomis Hilario, Óscar | |
dc.contributor.author | Errandonea, Daniel | |
dc.contributor.author | Ferrer Roca, Chantal María | |
dc.contributor.author | Martínez García, Domingo | |
dc.contributor.author | Segura García del Río, Alfredo | |
dc.date.accessioned | 2012-05-16T07:29:50Z | |
dc.date.available | 2012-05-16T07:29:50Z | |
dc.date.issued | 2011-08-02 | |
dc.identifier.citation | Physical Review B (2011) vol. 84, no. 5 | ca_CA |
dc.identifier.issn | 1098-0121 | |
dc.identifier.issn | 1550-235X | |
dc.identifier.uri | http://hdl.handle.net/10234/37501 | |
dc.description.abstract | In this paper, we report the angle-dispersive x-ray diffraction data of barite, BaSO4 , measured in a diamond-anvil cell up to a pressure of 48 GPa, using three different fluid pressure-transmitting media (methanol-ethanol mixture, silicone oil, and He). Our results show that BaSO4 exhibits a phase transition at pressures that range from 15 to 27 GPa, depending on the pressure media used. This indicates that nonhydrostatic stresses have a crucial role in the high-pressure behavior of this compound. The new high-pressure (HP) phase has been solved and refined from powder data, having an orthorhombic P212121 structure. The pressure dependence of the structural parameters of both room- and HP phases of BaSO4 is also discussed in light of our theoretical first-principles total-energy calculations. Finally, a comparison between the different equations of state obtained in our experiments is reported. | ca_CA |
dc.format.extent | 8 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | American Physical Society | ca_CA |
dc.rights | © American Physical Society | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | X-ray diffraction | ca_CA |
dc.subject | Barite | ca_CA |
dc.subject | High-pressure | ca_CA |
dc.subject | BaSO4 | ca_CA |
dc.subject.lcsh | Barium compounds | ca_CA |
dc.subject.lcsh | High pressure (Technology) | ca_CA |
dc.subject.other | Compostos de bari | ca_CA |
dc.subject.other | Tecnologia de les altes pressions | ca_CA |
dc.title | High-pressure study of the behavior of mineral barite by x-ray diffraction | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1103/PhysRevB.84.054102 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | http://link.aps.org/doi/10.1103/PhysRevB.84.054102 | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion |
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