Fractal approach to ac impedance spectroscopy studies of ceramic materials

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dc.contributor.authorBranković, Goran [UNESP]
dc.contributor.authorBranković, Zorica [UNESP]
dc.contributor.authorJović, Vladimir D.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of Belgrade
dc.date.accessioned2014-05-27T11:20:19Z
dc.date.available2014-05-27T11:20:19Z
dc.date.issued2001-11-01
dc.description.abstractA novel fractal model for grain boundary regions of ceramic materials was developed. The model considers laterally inhomogeneous distribution of charge carriers in the vicinity of grain boundaries as the main cause of the non-Debye behaviour and distribution of relaxation times in ceramic materials. Considering the equivalent circuit the impedance of the grain boundary region was expressed. It was shown that the impedance of the grain boundary region has the form of the Davidson-Cole equation. The fractal dimension of the inhomogeneous distribution of charge carriers in the region close to the grain boundaries could be calculated based on the relation ds = 1 + β, where β is the constant from the Davidson-Cole equation.en
dc.description.affiliationInstituto de Quimica UNESP, P.O. Box 355 CEP: 14.801-970, Araraquara, SP
dc.description.affiliationCenter for Multidisciplinary Studies University of Belgrade, P.O. Box 33, Belgrade 11030
dc.description.affiliationFaculty of Technology and Metallurgy University of Belgrade, Karnegijeva 4, Belgrade 11000
dc.description.affiliationUnespInstituto de Quimica UNESP, P.O. Box 355 CEP: 14.801-970, Araraquara, SP
dc.format.extent89-94
dc.identifierhttp://dx.doi.org/10.1023/B:JECR.0000027948.16316.bd
dc.identifier.citationJournal of Electroceramics, v. 7, n. 2, p. 89-94, 2001.
dc.identifier.doi10.1023/B:JECR.0000027948.16316.bd
dc.identifier.issn1385-3449
dc.identifier.scopus2-s2.0-0035520272
dc.identifier.urihttp://hdl.handle.net/11449/66600
dc.identifier.wosWOS:000173565000003
dc.language.isoeng
dc.relation.ispartofJournal of Electroceramics
dc.relation.ispartofjcr1.238
dc.relation.ispartofsjr0,427
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectCeramics
dc.subjectFractal
dc.subjectGrain boundary
dc.subjectImpedance spectroscopy
dc.subjectModel
dc.subjectCalculations
dc.subjectCarrier mobility
dc.subjectCharge carriers
dc.subjectElectric conductivity of solids
dc.subjectElectric impedance
dc.subjectFractals
dc.subjectGrain boundaries
dc.subjectMathematical models
dc.subjectRelaxation processes
dc.subjectSpectroscopy
dc.subjectDavidson-Cole equation
dc.subjectInhomogeneous distribution
dc.subjectNon-Debye relaxation
dc.subjectCeramic materials
dc.titleFractal approach to ac impedance spectroscopy studies of ceramic materialsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Físico Química - IQ