Synthesis and characterization of 0.9PMN-0.1PT powders by the use of a modified columbite precursor

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dc.contributor.authorBruno, J. C. [UNESP]
dc.contributor.authorCavalheiro, A. A. [UNESP]
dc.contributor.authorZaghete, M. A. [UNESP]
dc.contributor.authorCilense, M. [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:21:44Z
dc.date.available2014-05-27T11:21:44Z
dc.date.issued2005-12-01
dc.description.abstractThe complex perovskite compound 0.9PbMg 1/3Nb 2/3O 3-0.1PbTiO 3 is one of the most promising relaxor ceramic because the addition of lead titanate increases T m, by about 5°C/mol% from intrinsic T m value for pure PMN (near -7 to -15°C). A Ti-modified columbite precursor was used to prepare PMN-PT powders containing single perovskite phase. This variation on columbite route includes Ti insertion in MgNb 2O 6 orthorhombic structure so that individual PT synthesis becomes unnecessary. Furthermore, effects of Li additive on columbite and PMN-PT structures were studied by XRD to verify the phase formation at each processing step. XRD data were also used for the structural refinement by Rietveld method. The additive acts increasing columbite powders crystallinity, and the amount of perovskite phase was insignificantly decreased by lithium addition. By SEM micrographs it was observed that Li presence in PMN-PT powders leads to the formation of rounded primary particles and for lmol% of additive, the grain size is not changed, different from when this concentration is enhanced to 2mol%.en
dc.description.affiliationCMDMC Instituto de Química UNESP, P.O.Box: 355, Araraquara, SP 14.801-970
dc.description.affiliationUnespCMDMC Instituto de Química UNESP, P.O.Box: 355, Araraquara, SP 14.801-970
dc.format.extent642-647
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/MSF.498-499.642
dc.identifier.citationMaterials Science Forum, v. 498-499, p. 642-647.
dc.identifier.doi10.4028/www.scientific.net/MSF.498-499.642
dc.identifier.issn0255-5476
dc.identifier.lattes9128353103083394
dc.identifier.scopus2-s2.0-33847217153
dc.identifier.urihttp://hdl.handle.net/11449/68606
dc.identifier.wosWOS:000233984500105
dc.language.isoeng
dc.relation.ispartofMaterials Science Forum
dc.relation.ispartofsjr0,180
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCeramics
dc.subjectChemical synthesis
dc.subjectColumbite and rietveld method
dc.subjectPMN-PT
dc.subjectOrthorhombic structure
dc.subjectPerovskite phase
dc.subjectAddition reactions
dc.subjectCeramic materials
dc.subjectPerovskite
dc.subjectRietveld method
dc.subjectSynthesis (chemical)
dc.subjectPowder metals
dc.titleSynthesis and characterization of 0.9PMN-0.1PT powders by the use of a modified columbite precursoren
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.scientific.net/
unesp.author.lattes9128353103083394
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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