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Effect of niobia on the crystal structure and dielectric characteristics of Pb(Zr0.45Ti0.55)O-3 prepared from polymeric precursor

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dc.contributor.authorPaiva-Santos, C. O.
dc.contributor.authorOliveira, C. F.
dc.contributor.authorLas, W. C.
dc.contributor.authorZaghete, M. A.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorCilense, M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:25:13Z
dc.date.available2014-05-20T15:25:13Z
dc.date.issued2000-01-01
dc.description.abstractThe influence of niobia addition on the phase formation and dielectric properties of Pb(Zr0.45Ti0.55)O-3 powder prepared from polymeric precursor was analyzed. The weight fraction and unit-cell volume of the tetragonal phase decreased, and the mass fraction of the rhombohedral phase increased, with increasing niobia concentration. The rhombohedral unit-cell volume increased up to 5 mol% of added Nb and then decreased. Small amounts of pyrochlore and tetragonal zirconia phases were observed in PZT powder with more than 10 mol% Nb. These results were interpreted as an indication that the Nb ion was substituted for the zirconium ion in the tetragonal phase. For sintered PZT samples at 1100 degrees C, no free-zirconia phase was observed. The dielectric constant increased with the niobia addition up to 5 mol% and decreased for higher concentrations. The Curie temperature decreased with niobia addition up to 10 mol% before the formation of pyrochlore phase. (C) 2000 Elsevier B.V. Ltd. All rights reserved.en
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent15-24
dc.identifierhttp://dx.doi.org/10.1016/S0025-5408(00)00192-6
dc.identifier.citationMaterials Research Bulletin. Oxford: Pergamon-Elsevier B.V., v. 35, n. 1, p. 15-24, 2000.
dc.identifier.doi10.1016/S0025-5408(00)00192-6
dc.identifier.issn0025-5408
dc.identifier.lattes9128353103083394
dc.identifier.urihttp://hdl.handle.net/11449/35675
dc.identifier.wosWOS:000087166200003
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMaterials Research Bulletin
dc.relation.ispartofjcr2.873
dc.relation.ispartofsjr0,746
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectceramicspt
dc.subjectchemical synthesispt
dc.subjectX-ray diffractionpt
dc.subjectcrystal structurept
dc.subjectdielectric propertiespt
dc.titleEffect of niobia on the crystal structure and dielectric characteristics of Pb(Zr0.45Ti0.55)O-3 prepared from polymeric precursoren
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.lattes9128353103083394
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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