General rules for predicting phase transitions in perovskites due to octahedral tilting

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dc.contributorVirginia Techen
dc.contributor.authorAngel, Ross J.en
dc.contributor.authorZhao, J.en
dc.contributor.authorRoss, Nancy L.en
dc.contributor.departmentGeosciencesen
dc.date.accessed2013-12-10en
dc.date.accessioned2013-12-10T17:31:16Zen
dc.date.available2013-12-10T17:31:16Zen
dc.date.issued2005-07-08en
dc.description.abstractRecent experiments on several oxide perovskites reveal that they undergo tilt phase transitions to higher-symmetry phases on increasing pressure and that dT(c)/dP < 0, contrary to a general rule previously proposed for such zone-boundary transitions. We show that the negative slope of the phase boundary is a consequence of the octahedra in these perovskites being more compressible than the extra-framework cation sites. Conversely, when the octahedra are stiffer than the extra-framework cation sites, the phase transition temperatures increase with increasing pressure, dT(c)/dP > 0.en
dc.identifier.citationAngel, RJ ; Zhao, J ; Ross, NL, Jul 8, 2005. “General rules for predicting phase transitions in perovskites due to octahedral tilting,” PHYSICAL REVIEW LETTERS 95(2): 025503. DOI: 10.1103/PhysRevLett.95.025503en
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.95.025503en
dc.identifier.issn0031-9007en
dc.identifier.urihttp://hdl.handle.net/10919/24483en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevLett.95.025503en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectx-ray-diffractionen
dc.subjectcrystal-chemistryen
dc.subjectgdfeo3-type perovskitesen
dc.subjectpowderen
dc.subjectdiffractionen
dc.subjectpressureen
dc.subjectdistortionen
dc.subjectlaalo3en
dc.subjectmgsio3en
dc.subjectgpaen
dc.subjectbehavioren
dc.subjectPhysicsen
dc.titleGeneral rules for predicting phase transitions in perovskites due to octahedral tiltingen
dc.title.serialPhysical Review Lettersen
dc.typeArticle - Refereeden

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