Effect of La doping on the ferroic order in Pb-based perovskite-type relaxor ferroelectrics

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dc.contributorVirginia Techen
dc.contributor.authorMaier, B. J.en
dc.contributor.authorWelsch, A. M.en
dc.contributor.authorMihailova, B.en
dc.contributor.authorAngel, R. J.en
dc.contributor.authorZhao, J.en
dc.contributor.authorPaulmann, C.en
dc.contributor.authorEngel, J. M.en
dc.contributor.authorMarshall, W. G.en
dc.contributor.authorGospodinov, M.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.issued2011-04-07en
dc.description.abstractThe structural alteration induced by the substitution of three-valent cations with an isotropic electronic outermost shell for Pb2+ in perovskite-type relaxors was investigated in the solid solutions Pb1-xLaxSc(1+x)/2Ta(1-x)/2O3, x = 0.08 (PST-La) and Pb1-xLaxSc(1+x)/2Nb(1-x)/2O3, x = 0.23 (PSN-La). In order to distinguish the "charge" effects from "strain" effects associated with the incorporation of La3+ in the structure, Sr-containing PbSc0.5Nb0.5O3 was characterized as well. The structure of the compounds was analyzed by in situ Raman spectroscopy, single-crystal x-ray diffraction, and powder neutron diffraction at different temperatures or pressures. It is shown that the embedding of La3+ strongly affects the ferroic structural species due to strain effects through a disturbance of the system of lone-pair electrons associated with Pb2+ and a decrease in the tolerance factor. La doping suppresses the dynamical coupling between off-centered Pb and B-site cations and enhances antiphase BO6 octahedral tilting which, depending on the level of doping, may lead to long-range order of antiphase BO6 tilts at ambient conditions and frustrated antiferroelectric order of Pb ions at low temperatures.en
dc.description.sponsorshipDeutsche Forschungsgemeinschaft MI 1127/2-2, INST 152/460-1, INST 152/526-1en
dc.description.sponsorshipNational Science Foundation EAR-0738692en
dc.description.sponsorshipBulgarian Ministry of Science and Education BY-X-308en
dc.description.sponsorshipEUen
dc.identifier.citationMaier, B. J. ; Welsch, A. -M. ; Mihailova, B. ; et al., Apr 7, 2011. "Effect of La doping on the ferroic order in Pb-based perovskite-type relaxor ferroelectrics," PHYSICAL REVIEW B 83(13): 134106. DOI: 10.1103/PhysRevB.83.134106en
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.83.134106en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://hdl.handle.net/10919/25369en
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.83.134106en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjecthigh-pressureen
dc.subjectdisorderen
dc.subjectPhysicsen
dc.titleEffect of La doping on the ferroic order in Pb-based perovskite-type relaxor ferroelectricsen
dc.title.serialPhysical Review Ben
dc.typeArticle - Refereeden

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