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Influence of Ta2O5 on the electrical properties of ZnO- and CoO-doped SnO2 varistors

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dc.contributor.authorFilho, F. M.
dc.contributor.authorSimoes, A. Z.
dc.contributor.authorRies, A.
dc.contributor.authorSilva, I. P.
dc.contributor.authorPerazolli, L.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T15:26:19Z
dc.date.available2014-05-20T15:26:19Z
dc.date.issued2004-01-01
dc.description.abstractSnO2-based varistors doped with 0.5% cobalt, 0.5% zinc and various tantalum amounts were prepared by the solid-state route. Experimental evidence shows that small quantities of Ta2O5 improve the nonlinear properties of the samples significantly. It was found that samples doped with 0.05 mol% Ta2O5 exhibit the highest density (98.5%), the lowest electric breakdown field (E-b = 1050 V/cm) and the highest coefficient of nonlinearity (alpha = 11.5). The effect of Ta2O5 dopant could be explained by the substitution of Ta5+ by Sn4+. (C) 2004 Elsevier Ltd and Techna S.r.l. All rights reserved.en
dc.description.affiliationUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUFSCar, Dept Quim, Lab Interdisciplinar Eletroquim & Ceram, BR-13565905 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.format.extent2277-2281
dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2004.01.007
dc.identifier.citationCeramics International. Oxford: Elsevier B.V., v. 30, n. 8, p. 2277-2281, 2004.
dc.identifier.doi10.1016/j.ceramint.2004.01.007
dc.identifier.issn0272-8842
dc.identifier.urihttp://hdl.handle.net/11449/36503
dc.identifier.wosWOS:000225753600033
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.subjectpowders : solid state reactionpt
dc.subjectvaristorspt
dc.subjecttin dioxidept
dc.titleInfluence of Ta2O5 on the electrical properties of ZnO- and CoO-doped SnO2 varistorsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.lattes3573363486614904[2]
unesp.author.orcid0000-0003-2535-2187[2]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

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