Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O-3 ceramic

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dc.contributor.authorBadapanda, T.
dc.contributor.authorSenthil, V.
dc.contributor.authorRout, S. K.
dc.contributor.authorCavalcante, L. S. [UNESP]
dc.contributor.authorSimões, Alexandre Zirpoli [UNESP]
dc.contributor.authorSinha, T. P.
dc.contributor.authorPanigrahi, S.
dc.contributor.authorde Jesus, M. M.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionNatl Inst Technol
dc.contributor.institutionBirla Inst Technol
dc.contributor.institutionBose Inst
dc.contributor.institutionInst Fed Maranhao
dc.date.accessioned2014-05-20T15:31:44Z
dc.date.available2014-05-20T15:31:44Z
dc.date.issued2011-11-01
dc.description.abstractIn this work, we report the Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O-3 ceramic synthesized by solid state reaction. This ceramic was characterized by X-ray diffraction, Rietveld refinement, scanning electron microscopy and energy dispersive X-ray spectrometry. Impedance spectroscopy analyses reveals a non-Debye relaxation phenomenon being its relaxation frequency moving toward to positive side with increase of temperature. A significant shift in impedance loss peaks toward higher frequency side indicates conduction in material and favoring the long range motion of mobile charge carriers. The frequency dependent ac conductivity at different temperatures indicates that the conduction process is thermally activated. The variation of dc conductivity exhibited a negative temperature coefficient of resistance behavior. The ac conductivity data are used to evaluate the density of states at Fermi level and activation energy of this ceramic. The dc electrical and thermal conductivities of grain and grain boundary have been discussed. (C) 2011 Elsevier B.V. All rights reserved. 3en
dc.description.affiliationUniv Estadual Paulista, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, BR-12500000 Guaratingueta, SP, Brazil
dc.description.affiliationNatl Inst Technol, Dept Phys, Rourkela 769008, India
dc.description.affiliationBirla Inst Technol, Dept Appl Phys, Ranchi 835215, Bihar, India
dc.description.affiliationBose Inst, Dept Phys, Calcutta 700009, India
dc.description.affiliationInst Fed Maranhao, Sao Luis, MA, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, BR-12500000 Guaratingueta, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFAPESP: 09/50303-4
dc.format.extent1282-1293
dc.identifierhttp://dx.doi.org/10.1016/j.cap.2011.03.056
dc.identifier.citationCurrent Applied Physics. Amsterdam: Elsevier B.V., v. 11, n. 6, p. 1282-1293, 2011.
dc.identifier.doi10.1016/j.cap.2011.03.056
dc.identifier.issn1567-1739
dc.identifier.lattes3573363486614904
dc.identifier.urihttp://hdl.handle.net/11449/40795
dc.identifier.wosWOS:000294290300005
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofCurrent Applied Physics
dc.relation.ispartofjcr2.058
dc.relation.ispartofsjr0,647
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectSolid state reactionen
dc.subjectGrain boundariesen
dc.subjectImpedanceen
dc.subjectPerovskitesen
dc.titleRietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O-3 ceramicen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes3573363486614904
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt

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