Effect of Ba incorporation on pressure-induced structural changes in the relaxor ferroelectric PbSc0.5Ta0.5O3

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dc.contributorVirginia Techen
dc.contributor.authorWelsch, A. M.en
dc.contributor.authorMaier, B. J.en
dc.contributor.authorEngel, J. M.en
dc.contributor.authorMihailova, B.en
dc.contributor.authorAngel, R. J.en
dc.contributor.authorPaulmann, C.en
dc.contributor.authorGospodinov, M.en
dc.contributor.authorFriedrich, A.en
dc.contributor.authorStosch, R.en
dc.contributor.authorGuttler, B.en
dc.contributor.authorPetrova, D.en
dc.contributor.authorBismayer, U.en
dc.contributor.departmentGeosciencesen
dc.date.accessed2013-12-18en
dc.date.accessioned2014-02-11T13:45:55Zen
dc.date.available2014-02-11T13:45:55Zen
dc.date.issued2009-09-28en
dc.description.abstractPressure-induced structural changes in the canonical relaxor Pb0.78Ba0.22Sc0.5Ta0.5O3 were studied with both in-house and synchrotron single-crystal x-ray diffraction as well as Raman spectroscopy at pressures up to 9.8 GPa. The results reveal that the substitution of Ba for Pb in ABO(3) perovskite-type structures, i.e., the substitution of a two-valent element with an isotropic electron shell for an isovalent element with a stereochemically active lone pair, leads to a "diffuse pressure-induced phase transition," a structural transformation over a broad pressure range, without a well-defined critical pressure point. The smeared phase transition of the average structure results from the existence of local structural deformations in the vicinity of A-positioned Ba cations.en
dc.description.sponsorshipDeutsche Forschungsgemeinschaft_MI 1127/2-1, INST 152/485-1 FUGG, GK 611en
dc.description.sponsorshipNational Science Foundation EAR-0738692en
dc.description.sponsorshipBulgarian Ministry of Science and Education BYX 308en
dc.identifier.citationWelsch, A. -M. ; Maier, B. J. ; Engel, J. M. ; et al., Sep 2009. "Effect of Ba incorporation on pressure-induced structural changes in the relaxor ferroelectric PbSc0.5Ta0.5O3," PHYSICAL REVIEW B 80(10): 104118. DOI: 10.1103/PhysRevB.80.104118en
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.80.104118en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://hdl.handle.net/10919/25368en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.80.104118en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectphase-transitionsen
dc.subjectcrystallographyen
dc.subjectanorthiteen
dc.subjectPhysicsen
dc.titleEffect of Ba incorporation on pressure-induced structural changes in the relaxor ferroelectric PbSc0.5Ta0.5O3en
dc.title.serialPhysical Review Ben
dc.typeArticle - Refereeden

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