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dc.contributorVirginia Tech
dc.contributor.authorMaier, B. J.
dc.contributor.authorWelsch, A. M.
dc.contributor.authorMihailova, B.
dc.contributor.authorAngel, R. J.
dc.contributor.authorZhao, J.
dc.contributor.authorPaulmann, C.
dc.contributor.authorEngel, J. M.
dc.contributor.authorMarshall, W. G.
dc.contributor.authorGospodinov, M.
dc.contributor.authorPetrova, D.
dc.contributor.authorBismayer, U.
dc.date.accessioned2014-02-11T13:45:55Z
dc.date.available2014-02-11T13:45:55Z
dc.date.issued2011-04-07
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.83.134106
dc.identifier.issn1098-0121
dc.identifier.urihttp://hdl.handle.net/10919/25369
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.
dc.description.sponsorshipDeutsche Forschungsgemeinschaft MI 1127/2-2, INST 152/460-1, INST 152/526-1
dc.description.sponsorshipNational Science Foundation EAR-0738692
dc.description.sponsorshipBulgarian Ministry of Science and Education BY-X-308
dc.description.sponsorshipEU
dc.language.isoen_US
dc.publisherAmerican Physical Society
dc.subjecthigh-pressure
dc.subjectdisorder
dc.subjectPhysics
dc.titleEffect of La doping on the ferroic order in Pb-based perovskite-type relaxor ferroelectrics
dc.typeArticle - Refereed
dc.identifier.urlhttp://link.aps.org/doi/10.1103/PhysRevB.83.134106
dc.date.accessed2013-12-18
dc.title.serialPhysical Review B
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.83.134106


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