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Study of structural evolution and photoluminescent properties at room temperature of Ca(Zr, Ti)O-3 powders

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dc.contributor.authorCavalcante, L. S.
dc.contributor.authorSimões, Alexandre Zirpoli [UNESP]
dc.contributor.authorEspinosa, J. W. M. [UNESP]
dc.contributor.authorSantos, L. P. S.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorPizani, P. S.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCentro Federal de Educação Tecnológica (CEFET)
dc.date.accessioned2014-05-20T14:18:29Z
dc.date.available2014-05-20T14:18:29Z
dc.date.issued2008-09-22
dc.description.abstractCalcium zirconate titanate, Ca(Zr0.05Ti0.95)O-3 (CZT) powders has been synthesized by the polymeric precursor method. The structural evolution and analysis of the CZT powders were monitored by the X-ray diffraction (XRD), Fourier transform Raman spectroscopy (FT-Raman) and ultraviolet-visible absorption spectroscopy (UV-vis). The decomposition of precursor resin was accompanied by evolution of thermogravimetric analysis (TGA) and differential thermogravimetric analysis (DTA). UV-vis measurements suggested that the presence of intermediary energy levels in the band gap are favorable for the intense and broad photoluminescence (PL) in structurally disordered CZT powders at room temperature. TGA and DTA have been employed to correlate the ranges of temperature with the structural order-disorder degree in the CZT lattice that are responsible by PL emission. (C) 2007 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), LIEC, Dept Quim, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Lab Interdisciplinar Ceram, Dept Quim Fis, Inst Quim, BR-14801907 Araraquara, SP, Brazil
dc.description.affiliationCtr Fed Educ Tecnol Maranhao CEFET, Dept Quim, BR-64009700 Sao Luis, MA, Brazil
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Fis, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Lab Interdisciplinar Ceram, Dept Quim Fis, Inst Quim, BR-14801907 Araraquara, SP, Brazil
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.format.extent340-346
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2007.09.121
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 464, n. 1-2, p. 340-346, 2008.
dc.identifier.doi10.1016/j.jallcom.2007.09.121
dc.identifier.issn0925-8388
dc.identifier.urihttp://hdl.handle.net/11449/25571
dc.identifier.wosWOS:000259715300066
dc.language.isoeng
dc.publisherElsevier B.V. Sa
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.ispartofjcr3.779
dc.relation.ispartofsjr1,020
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectceramicsen
dc.subjectchemical synthesisen
dc.subjectorder-disorder effectsen
dc.subjectthermal analysisen
dc.subjectluminescenceen
dc.titleStudy of structural evolution and photoluminescent properties at room temperature of Ca(Zr, Ti)O-3 powdersen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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