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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/40191
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dc.contributor.authorPereira, P. F. S.-
dc.contributor.authorde Moura, A. P.-
dc.contributor.authorNogueira, I. C.-
dc.contributor.authorLima, M. V. S.-
dc.contributor.authorLongo, Elson-
dc.contributor.authorde Sousa Filho, P. C.-
dc.contributor.authorSerra, O. A.-
dc.contributor.authorNassar, E. J.-
dc.contributor.authorRosa, I. L. V.-
dc.date.accessioned2014-05-20T15:30:54Z-
dc.date.accessioned2016-10-25T18:06:35Z-
dc.date.available2014-05-20T15:30:54Z-
dc.date.available2016-10-25T18:06:35Z-
dc.date.issued2012-06-15-
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2012.02.083-
dc.identifier.citationJournal of Alloys and Compounds. Lausanne: Elsevier B.V. Sa, v. 526, p. 11-21, 2012.-
dc.identifier.issn0925-8388-
dc.identifier.urihttp://hdl.handle.net/11449/40191-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/40191-
dc.description.abstractIn this paper, we investigate the influence of temperature on the structural and luminescent properties of Eu3+-doped strontium tungstate oxide (SrWO4) prepared by the non-hydrolytic sol-gel route. X-ray diffraction (XRD) analyses showed that the SrWO4:Eu scheelite type structure was formed in a unique phase at 900 and 1000 degrees C over 2 h. Raman spectra indicated only one type of [WO4] tetrahedron. The optical properties were investigated by ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements at room and liquid N-2 temperatures. PL study showed D-5(0)-> F-7(2) electric dipole transition is dominant when Eu3+ occupies a non-centrosymmetric environment. The (FEG-SEM) images indicated that an increase in the annealing temperature contributed to the coalescence process which promoted the growth of aggregated particles of a polydisperse nature. A qualitative analysis of the powders obtained by dispersive X-ray detector (EDS) indicated that the samples are composed of Sr, W and O while Eu3+ ion was not observed due to it low concentration. (C) 2012 Elsevier B. V. All rights reserved.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.language.isoeng-
dc.publisherElsevier B.V. Sa-
dc.sourceWeb of Science-
dc.subjectNon-hydrolytic sol-gelen
dc.subjectStrontium tungstateen
dc.subjectScheeliteen
dc.subjectEuropiumen
dc.titleStudy of the annealing temperature effect on the structural and luminescent properties of SrWO4:Eu phosphors prepared by a non-hydrolytic sol-gel processen
dc.typeoutro-
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.contributor.institutionUniv Franca UNIFRAN-
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), BR-13565905 São Carlos, SP, Brazil-
dc.description.affiliationUniv Estadual Paulista Julio de Mesquita Filho UN, BR-14801907 Araraquara, SP, Brazil-
dc.description.affiliationUniv São Paulo FFCLRP USP, BR-14040901 Ribeirao Preto, SP, Brazil-
dc.description.affiliationUniv Franca UNIFRAN, BR-14404600 Franca, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista Julio de Mesquita Filho UN, BR-14801907 Araraquara, SP, Brazil-
dc.identifier.doi10.1016/j.jallcom.2012.02.083-
dc.identifier.wosWOS:000302770400003-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Alloys and Compounds-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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