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Influence of vanadium on electrical and microstructural properties of CaCu3Ti4O12/CaTiO3

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dc.contributor.authorRamajo, L.
dc.contributor.authorParra, R.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorReboredo, M. M.
dc.contributor.authorRamirez, M. A. [UNESP]
dc.contributor.authorCastro, M. S.
dc.contributor.institutionUniv Mar del Plata
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:28:19Z
dc.date.available2014-05-20T13:28:19Z
dc.date.issued2010-05-14
dc.description.abstractMicrostructure, electrical properties and dielectric behavior of undoped and VO2-doped CaCu3Ti4O12/CaTiO3 (CCTO/CTO) systems, were investigated. Discs doped with 0-3 mol% of VO2 were sintered at 1075 degrees C CaTiO3 (CTO) was found as a secondary phase in every sample, but vanadium phases were not detected It was also observed that vanadium diminished the CCTO grain size and dramatically changed the microstructure. The dielectric constant decreased from 13,500 to 9800 epsilon(0) (at 2500 Hz) for undoped to V-doped-CCTO/CTO. Also, the breakdown voltage and the non-linear coefficient alpha increased from 500 to 5000 V/m and from 3 to 25, respectively. Energy dispersive X-ray results indicated that vanadium was incorporated in the composite structure. (C) 2010 Elsevier B V All rights reserved.en
dc.description.affiliationUniv Mar del Plata, Inst Mat Sci & Technol INTEMA, CONICET, Mar Del Plata, Buenos Aires, Argentina
dc.description.affiliationSão Paulo State Univ UNESP, Inst Chem, BR-14800900 Araraquara, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, Inst Chem, BR-14800900 Araraquara, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCAPES: 029/08
dc.format.extent349-353
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2010.03.064
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 497, n. 1-2, p. 349-353, 2010.
dc.identifier.doi10.1016/j.jallcom.2010.03.064
dc.identifier.issn0925-8388
dc.identifier.urihttp://hdl.handle.net/11449/9425
dc.identifier.wosWOS:000278744600070
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 aberto
dc.sourceWeb of Science
dc.subjectCaCu3Ti4O12en
dc.subjectVanadiumen
dc.subjectElectrical propertiesen
dc.titleInfluence of vanadium on electrical and microstructural properties of CaCu3Ti4O12/CaTiO3en
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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