The influence of yttrium on a typical SnO2 varistor system: Microstructural and electrical features

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dc.contributor.authorParra, R.
dc.contributor.authorManiette, Y.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorCastro, M. S.
dc.contributor.institutionConsejo Nacl Invest Cient & Tecn
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:21:43Z
dc.date.available2014-05-20T15:21:43Z
dc.date.issued2005-12-15
dc.description.abstractThe influence of yttrium oxide, Y2O3, on the microstructure development of the SnO(2)center dot Co(3)O(4)center dot Nb2O5 typical varistor system was studied with scanning (SEM) and transmission (TEM) electron microscopies. The different phases present in the studied samples were characterized through XRD, EDS and selected area diffraction patterns (SAD). Particles of Co2SnO4 were observed with TEM in every sample, whereas clusters of the pyrochlore phase T2Sn2O7 were observed with SEM in samples with 0.05, 0.10 and 0.25 mol% of Y2O3. The higher non-linearity (a = 16) was achieved with the addition of 0.05 mol% of Y2O3. The influence of the secondary phases on the electrical properties is also addressed in this work. (c) 2005 Published by Elsevier B.V.en
dc.description.affiliationConsejo Nacl Invest Cient & Tecn, INTEMA UNMdP, Mar Del Plata, Argentina
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent347-352
dc.identifierhttp://dx.doi.org/10.1016/j.matchemphys.2005.05.014
dc.identifier.citationMaterials Chemistry and Physics. Lausanne: Elsevier B.V. Sa, v. 94, n. 2-3, p. 347-352, 2005.
dc.identifier.doi10.1016/j.matchemphys.2005.05.014
dc.identifier.issn0254-0584
dc.identifier.urihttp://hdl.handle.net/11449/32839
dc.identifier.wosWOS:000232677200030
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMaterials Chemistry and Physics
dc.relation.ispartofjcr2.210
dc.relation.ispartofsjr0,615
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectvaristorspt
dc.subjectelectron microscopypt
dc.subjectelectrical propertiespt
dc.subjectSnO2pt
dc.titleThe influence of yttrium on a typical SnO2 varistor system: Microstructural and electrical featuresen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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