Electrical measurements in doped zirconia-ceria ceramics

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dc.contributor.authorFoschini, C. R.
dc.contributor.authorPerazolli, L.
dc.contributor.authorSouza, DPF
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:24:38Z
dc.date.available2014-05-20T15:24:38Z
dc.date.issued2002-01-01
dc.description.abstractZirconia-ceria powders with 12 mol % of CeO2 doped with 0.3 mol% of iron, copper, manganese and nickel oxides were synthesized by the conventional mixed oxide method. These systems were investigated with regard to the sinterability and electrical properties. Sintering was studied considering the shrinkage rate, densification, grain size, and phase evolution. Small amount of dopant such as iron reduces sintering temperature by over 150degreesC and more than 98% of tetragonal phase was retained at room temperature in samples sintered at 1450degreesC against 1600degreesC to stabilize the tetragonal phase on pure ZrO2-CeO2 system. The electrical conductivity was measured using impedance spectroscopy and the results were reported. The activation energy values calculated from the Arrhenius's plots in the temperature range of 350-700degreesC for intragrain conductivities are 1.04 eV.en
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent137-146
dc.identifierhttp://dx.doi.org/10.1002/9781118370858.ch15
dc.identifier.citationMaterials For Electrochemical Energy Conversion and Storage. Westerville: Amer Ceramic Soc, v. 127, p. 137-146, 2002.
dc.identifier.doi10.1002/9781118370858.ch15
dc.identifier.issn1042-1122
dc.identifier.lattes1922357184842767
dc.identifier.orcid0000-0003-1300-4978
dc.identifier.urihttp://hdl.handle.net/11449/35205
dc.identifier.wosWOS:000181620900015
dc.language.isoeng
dc.publisherAmer Ceramic Soc
dc.relation.ispartofMaterials For Electrochemical Energy Conversion and Storage
dc.relation.ispartofsjr0,120
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleElectrical measurements in doped zirconia-ceria ceramicsen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderAmer Ceramic Soc
unesp.author.lattes1922357184842767[1]
unesp.author.orcid0000-0003-1300-4978[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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