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Structural and dielectric properties of Ba0.5Sr0.5(SnxTi1-x)O-3 ceramics obtained by the soft chemical method

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dc.contributor.authorSouza, I. A.
dc.contributor.authorCavalcante, L. S.
dc.contributor.authorSczancoski, J. C.
dc.contributor.authorMoura, F. [UNESP]
dc.contributor.authorPaiva-Santos, C. O. [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorSimões, Alexandre Zirpoli [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:33:22Z
dc.date.available2014-05-20T15:33:22Z
dc.date.issued2009-05-27
dc.description.abstractBa0.5Sr0.5(SnxTi1-x)O-3 ceramics with different compositions (x = 0, 0.05, 0.10 and 0.20) were synthesized by the soft chemical method. X-ray diffraction patterns and Rietveld refinements revealed that these ceramics crystallize in a cubic structure. Secondary phases (BaSnO3) were verified in Ba0.5Sr0.5(SnxTi1-x)O-3 ceramics with Sn content x >= 0.10. Raman spectra indicated a reduction in the Raman-active modes with the increase of Sn content in the lattice. Dilatometric measurements were used to analyze the sintering temperature behavior of these materials. Dielectric properties were investigated as a function of applied frequency. The increase in the remanent polarization was attributed to the imprint phenomenon due to the formation of oxygen vacancies. The domain pinning and the formation of BaSnO3 phase favored the increase in the coercive fields. (C) 2008 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Quim, LIEC, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Quim, LIEC IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Quim, LIEC IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCEFET-MA
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent877-882
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2008.11.042
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 477, n. 1-2, p. 877-882, 2009.
dc.identifier.doi10.1016/j.jallcom.2008.11.042
dc.identifier.issn0925-8388
dc.identifier.lattes3573363486614904
dc.identifier.urihttp://hdl.handle.net/11449/42018
dc.identifier.wosWOS:000266386400173
dc.language.isoeng
dc.publisherElsevier B.V. Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.ispartofjcr3.779
dc.relation.ispartofsjr1,020
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectCeramicsen
dc.subjectChemical synthesisen
dc.subjectDielectricen
dc.subjectX-ray diffractionen
dc.titleStructural and dielectric properties of Ba0.5Sr0.5(SnxTi1-x)O-3 ceramics obtained by the soft chemical methoden
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
dspace.entity.typePublication
unesp.author.lattes3573363486614904
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Guaratinguetápt
unesp.departmentMateriais e Tecnologia - FEGpt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

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Araraquara - IQAR - Instituto de Química
Guaratinguetá - FEG - Faculdade de Engenharia e Ciências