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dc.contributor.authorOliveira, R. C.
dc.contributor.authorCavalcante, L. S.
dc.contributor.authorSczancoski, J. C.
dc.contributor.authorAguiar, E. C. [UNESP]
dc.contributor.authorEspinosa, J. W. M. [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorPizani, P. S.
dc.contributor.authorLongo, Elson [UNESP]
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 478, n. 1-2, p. 661-670, 2009.
dc.description.abstractBismuth titanate, Bi4Ti3O12(BiT) powders were synthesized by the complex polymerization method. The structural evolution as a function of heat treatment temperature of these powders was analyzed by X-ray diffraction (XRD) and micro-Raman (MR) spectroscopy. The optical properties were verified by ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements. XRD patterns and MR spectra revealed that the BiT powders heat treated at 700 degrees C for 2 h under oxygen flow crystallize in an orthorhombic structure without deleterious phases. UV-vis spectra indicated the presence of intermediary energy levels within the band gap of the powders heat treated at low temperatures. The maximum PL emissions of these materials were verified at around 598 nm, when excited by 488 nm wavelengths. Also, it was observed the presence of two broad PL bands, which were attributed to the intermediary energy levels arising from alpha-Bi2O3 and BiT phases. (C) 2008 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.publisherElsevier B.V. Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.sourceWeb of Science
dc.subjectChemical synthesisen
dc.subjectOptical propertiesen
dc.titleSynthesis and photoluminescence behavior of Bi4Ti3O12 powders obtained by the complex polymerization methoden
dcterms.rightsHolderElsevier B.V. Sa
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Quim & Fis, LIEC, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Quim, LIEC IQ, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Quim, LIEC IQ, BR-14801907 Araraquara, SP, Brazil
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
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