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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/75204
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dc.contributor.authorMoura, F.-
dc.contributor.authorSimões, A. Z.-
dc.contributor.authorDeus, R. C.-
dc.contributor.authorSilva, M. R.-
dc.contributor.authorVarela, José Arana-
dc.contributor.authorLongo, Elson-
dc.date.accessioned2014-05-27T11:29:01Z-
dc.date.accessioned2016-10-25T18:47:53Z-
dc.date.available2014-05-27T11:29:01Z-
dc.date.available2016-10-25T18:47:53Z-
dc.date.issued2013-05-01-
dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2012.11.034-
dc.identifier.citationCeramics International, v. 39, n. 4, p. 3499-3506, 2013.-
dc.identifier.issn0272-8842-
dc.identifier.urihttp://hdl.handle.net/11449/75204-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/75204-
dc.description.abstractA study was undertaken about the structural and photoluminescent properties at room temperature of CaCu3Ti4O12 (CCTO) powders synthesized by a soft chemical method and heat treated between 300 and 800 °C. The decomposition of precursor powder was followed by thermogravimetric analysis (TG-DTA), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Fourier transform Raman (FT-Raman) and photoluminescence (PL) measurements. XRD analyses revealed that the powders annealed at 800 °C are becoming ordered and crystallize in the cubic structure. The most intense PL emission was obtained for the sample calcined at 700 °C, which is not highly disordered (300-500 °C) and neither completely ordered (800 °C). From the spectrum it is clearly visible that the lowest wavelength peak is placed around 480 nm and the highest wavelength peak at about 590 nm. The UV/vis absorption spectroscopy measurements showed the presence of intermediate energy levels in the band gap of structurally disordered powders. © 2012 Elsevier Ltd and Techna Group S.r.l.en
dc.format.extent3499-3506-
dc.language.isoeng-
dc.sourceScopus-
dc.subjectA. Ceramics-
dc.subjectB. Chemical syntheses-
dc.subjectB. Powder metallurgy-
dc.subjectC. X-ray diffraction-
dc.subjectCalcium copper titanates-
dc.subjectChemical synthesis-
dc.subjectCubic structure-
dc.subjectFourier transform infrared-
dc.subjectFourier transform Raman-
dc.subjectFT-Raman-
dc.subjectIntermediate energies-
dc.subjectPhoto-luminescent properties-
dc.subjectPhotoluminescence emission-
dc.subjectPhotoluminescence measurements-
dc.subjectPL emission-
dc.subjectPrecursor powder-
dc.subjectRoom temperature-
dc.subjectSoft chemical method-
dc.subjectSpectroscopy measurements-
dc.subjectUv/vis absorptions-
dc.subjectXRD analysis-
dc.subjectCalcination-
dc.subjectPhotoluminescence-
dc.subjectPowder metallurgy-
dc.subjectThermogravimetric analysis-
dc.subjectX ray diffraction-
dc.subjectPowders-
dc.titleIntense photoluminescence emission at room temperature in calcium copper titanate powdersen
dc.typeoutro-
dc.contributor.institutionUniversidade Federal de Itajubá (UNIFEI)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniversidade Federal de Itajubá UNIFEI Campus Itabira, Rua São Paulo 377, 35900-37 Itabira, Minas Gerais-
dc.description.affiliationUniversidade Estadual Paulista UNESP Faculdade de Engenharia de Guaratinguetá, Av. Dr Ariberto Pereira da Cunha 333, 12.516-410 Guaratinguetá, São Paulo-
dc.description.affiliationLaboratório Interdisciplinar em Cerâmica Instituto de Química Universidade Estadual Paulista, P.O. Box 355, 14801-907 Araraquara, São Paulo-
dc.description.affiliationUnespUniversidade Estadual Paulista UNESP Faculdade de Engenharia de Guaratinguetá, Av. Dr Ariberto Pereira da Cunha 333, 12.516-410 Guaratinguetá, São Paulo-
dc.description.affiliationUnespLaboratório Interdisciplinar em Cerâmica Instituto de Química Universidade Estadual Paulista, P.O. Box 355, 14801-907 Araraquara, São Paulo-
dc.identifier.doi10.1016/j.ceramint.2012.11.034-
dc.identifier.wosWOS:000318129100003-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofCeramics International-
dc.identifier.scopus2-s2.0-84874668001-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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