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dc.contributor.authorGonzalez-Abreu, Y.-
dc.contributor.authorPelaiz-Barranco, A.-
dc.contributor.authorAraujo, E. B.-
dc.contributor.authorFranco Junior, A.-
dc.identifier.citationApplied Physics Letters. Melville: Amer Inst Physics, v. 94, n. 26, p. 3, 2009.-
dc.description.abstractSr(0.5)Ba(0.5)Bi(2)Nb(2)O(9) ferroelectric ceramics exhibit a complex dielectric behavior, showing typical relaxor behavior. The relaxation processes are described by the Cole-Cole model [K. S. Cole and R. H. Cole, J. Chem. Phys. 9, 341 (1941)]. At temperatures below 490 K, the dielectric relaxation is associated to the relaxorlike ferroelectric behavior, resulting from the inhomogeneous distribution of barium due to its preference for the bismuth site. Above that, the interaction between the dipoles, which form the microdomains above the relaxor ferroelectric peak and the electrons, which are due to the ionization of the oxygen vacancies are discussed as the probable origin of the relaxation.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.publisherAmerican Institute of Physics (AIP)-
dc.sourceWeb of Science-
dc.subjectbarium compoundsen
dc.subjectbismuth compoundsen
dc.subjectdielectric relaxationen
dc.subjectelectric domainsen
dc.subjectferroelectric ceramicsen
dc.subjectrelaxor ferroelectricsen
dc.subjectstrontium compoundsen
dc.subjectvacancies (crystal)en
dc.titleDielectric relaxation and relaxor behavior in bilayered perovskitesen
dc.contributor.institutionUniv La Habana-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal de Goiás (UFG)-
dc.description.affiliationUniv La Habana, Fac Fis, Inst Ciência & Tecnol Mat, Havana 10400, Cuba-
dc.description.affiliationUniv Estadual Paulista UNESP, Dept Quim & Fis, BR-15385000 São Paulo, Brazil-
dc.description.affiliationUniv Fed Goias, Inst Fis, BR-74001970 Goiania, Go, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Dept Quim & Fis, BR-15385000 São Paulo, Brazil-
dc.description.sponsorshipIdCNPq: 450070/2008-5-
dc.description.sponsorshipIdCNPq: 301382/2006-9-
dc.description.sponsorshipIdFAPESP: 07/05302-4-
dc.description.sponsorshipIdFAPESP: 07/00183-7-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofApplied Physics Letters-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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