EFFECT OF CR2O3 ON THE ELECTRICAL-PROPERTIES OF MULTICOMPONENT ZNO VARISTORS AT THE PREBREAKDOWN REGION

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dc.contributor.authorPianaro, S. A.
dc.contributor.authorPereira, E. C.
dc.contributor.authorBulhoes, LOS
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUNIV ESTADUAL PONTA GROSSA
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:20:07Z
dc.date.available2014-05-20T15:20:07Z
dc.date.issued1995-01-01
dc.description.abstractThe effect of Cr2O3 on the electrical properties of the multicomponent ZnO varistors was investigated using voltage-current curves and impedance spectroscopy. The structure and morphological modifications were analysed by X-ray diffraction and scanning electron microscopy, respectively. It was observed in samples with addition 0.1 mol% Cr2O3 that there was an improvement in the electrical properties of the varistors, but the increase in concentration had a deleterious effect on the potential barrier at the grain boundary. The excess Cr2O3 segregates at the grain-boundary region and increases the donor concentration, leading to a higher leakage current.en
dc.description.affiliationUNIV FED SAO CARLOS,DQ,LIEC,BR-13565905 SAO CARLOS,SP,BRAZIL
dc.description.affiliationUNIV ESTADUAL PONTA GROSSA,DEPT MAT ENGN,BR-84031510 PONTA GROSSA,BRAZIL
dc.description.affiliationUNESP,INST QUIM,BR-14800900 ARARAQUARA,SP,BRAZIL
dc.description.affiliationUnespUNESP,INST QUIM,BR-14800900 ARARAQUARA,SP,BRAZIL
dc.format.extent133-141
dc.identifierhttp://dx.doi.org/10.1007/BF00352142
dc.identifier.citationJournal of Materials Science. London: Chapman Hall Ltd, v. 30, n. 1, p. 133-141, 1995.
dc.identifier.doi10.1007/BF00352142
dc.identifier.issn0022-2461
dc.identifier.urihttp://hdl.handle.net/11449/31460
dc.identifier.wosWOS:A1995QB22500017
dc.language.isoeng
dc.publisherChapman Hall Ltd
dc.relation.ispartofJournal of Materials Science
dc.relation.ispartofjcr2.993
dc.relation.ispartofsjr0,807
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleEFFECT OF CR2O3 ON THE ELECTRICAL-PROPERTIES OF MULTICOMPONENT ZNO VARISTORS AT THE PREBREAKDOWN REGIONen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dcterms.rightsHolderChapman Hall Ltd
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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