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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.identifier.citationMaterials Research Bulletin. Oxford: Pergamon-Elsevier B.V. Ltd, v. 43, n. 2, p. 297-304, 2008.
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.publisherPergamon-Elsevier B.V. Ltd
dc.relation.ispartofMaterials Research Bulletin
dc.sourceWeb of Science
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
dcterms.rightsHolderPergamon-Elsevier B.V. Ltd
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
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.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt[4]
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