Structural characterization of 0.5PbMg(1/3)Nb(2/3)O(3)-0.5Ba(x)Pb((1-x))TiO(3) powders

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dc.contributor.authorBruno, J. C. [UNESP]
dc.contributor.authorBoni, T. C. [UNESP]
dc.contributor.authorCavalheiro, A. A. [UNESP]
dc.contributor.authorZaghete, M. A. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:53:39Z
dc.date.available2014-05-20T13:53:39Z
dc.date.issued2008-02-05
dc.description.abstractThe present work reports the effects caused by barium on phase formation, morphology and sintering of lead magnesium niobate-lead titanate (PMN-50PT). Ab initio study of 0.5PbMg(1/3)Nb(2/3)O(3)-0.5Ba(x)Pb((1-x))TiO(3) ceramic powders, with x = 0, 0.20, and 0.40 was proposed, considering that the partial substitution of lead by barium can reestablish the equilibrium of monoclinic-tetragonal phases in the system. It was verified that even for 40 mol% of barium, it was possible to obtain pyrochlore-free PMN-PT powders. The increase of the lattice parameters of PMN-PT doped-powders confirmed dopant incorporation into the perovskite phase. The presence of barium improved the reactivity of the powders, with an average particle size of 120 nm for 40 mol% of barium against 167 mn for the pure sample. Although high barium content (40 mol%) was deleterious for a dense ceramic, contents up to 20 mol% allowed 95% density when sintered at 1100 degrees C for 4 h. (c) 2007 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNESP, Inst Biociencias, Depto Quim, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Biociencias, Depto Quim, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent297-304
dc.identifierhttp://dx.doi.org/10.1016/j.materresbull.2007.03.010
dc.identifier.citationMaterials Research Bulletin. Oxford: Pergamon-Elsevier B.V. Ltd, v. 43, n. 2, p. 297-304, 2008.
dc.identifier.doi10.1016/j.materresbull.2007.03.010
dc.identifier.issn0025-5408
dc.identifier.urihttp://hdl.handle.net/11449/19157
dc.identifier.wosWOS:000252579800013
dc.language.isoeng
dc.publisherPergamon-Elsevier B.V. Ltd
dc.relation.ispartofMaterials Research Bulletin
dc.relation.ispartofjcr2.873
dc.relation.ispartofsjr0,746
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectceramicsen
dc.subjectX-ray diffractionen
dc.subjectphase equilibriaen
dc.titleStructural characterization of 0.5PbMg(1/3)Nb(2/3)O(3)-0.5Ba(x)Pb((1-x))TiO(3) powdersen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderPergamon-Elsevier B.V. Ltd
unesp.author.orcid0000-0002-5867-1443[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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