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Electrical and micro structural properties of (Zn, Nb, Fe)-doped SnO2 varistor systems

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dc.contributor.authorParra, R.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorAldao, C. M.
dc.contributor.authorCastro, M. S.
dc.contributor.institutionUNMdP
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:21:39Z
dc.date.available2014-05-20T15:21:39Z
dc.date.issued2005-01-01
dc.description.abstractThe electrical and microstructural properties of SnO2-based varistors with the addition of 0.025 and 0.050 mol% of Fe2O3 have been characterised. Electric field (E) versus current density (J) curves showed that the effect of Fe2O3 addition is to increase both the non-linear coefficient and the breakdown voltage. Variations in the potential barrier height were inferred from impedance spectroscopy (IS) analysis. Through transmission electron microscopy (TEM), the presence of precipitates of secondary phases was confirmed. Samples with precipitates displayed poor electrical properties. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.en
dc.description.affiliationUNMdP, CONICET, INTEMA, Inst Mat Sci & Technol, Mar Del Plata, Buenos Aires, Argentina
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent737-742
dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2004.08.009
dc.identifier.citationCeramics International. Oxford: Elsevier B.V., v. 31, n. 5, p. 737-742, 2005.
dc.identifier.doi10.1016/j.ceramint.2004.08.009
dc.identifier.issn0272-8842
dc.identifier.urihttp://hdl.handle.net/11449/32772
dc.identifier.wosWOS:000229358700016
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofCeramics International
dc.relation.ispartofjcr3.057
dc.relation.ispartofsjr0,784
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectmicrostructure-finalpt
dc.subjectelectrical propertiespt
dc.subjectimpedancept
dc.subjectvaristorspt
dc.subjecttin dioxidept
dc.titleElectrical and micro structural properties of (Zn, Nb, Fe)-doped SnO2 varistor systemsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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Araraquara - IQAR - Instituto de Química