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dc.contributor.authorSouza, A. E.-
dc.contributor.authorSilva, R. A.-
dc.contributor.authorSantos, G. T. A.-
dc.contributor.authorTeixeira, S. R.-
dc.contributor.authorAntonio, S. G.-
dc.contributor.authorMoreira, M. L.-
dc.contributor.authorVolanti, D. P.-
dc.contributor.authorLongo, Elson-
dc.identifier.citationChemical Physics Letters. Amsterdam: Elsevier B.V., v. 514, n. 4-6, p. 301-306, 2011.-
dc.description.abstractBaxSr1-xTiO3 was prepared by the microwave-assisted hydrothermal method. The ceramic powder was characterized by X-ray diffraction, Raman, ultraviolet-visible and photoluminescence (PL) spectroscopies and scanning electron microscopy (FE-SEM). The results confirm that the powders consist of perovskite-type cubic and tetragonal crystalline structures. The Raman data show bands characterizing a multi-phonon process, suggesting the presence of defects, due to partial Sr/Ba substitution, resulting in different distorted clusters. A broad-band PL emission (blue light region) confirms the existence of these defects, which together with the results of ultraviolet-visible spectroscopy suggests non-uniformity in band structure. The distinct morphologies observed are associated with different clusters organization during the nucleation and growth of the BaxSr1-xTiO3 nanoparticles. (C) 2011 Elsevier B. V. All rights reserved.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.titleOrder-disorder degree of self-assembled clusters: Influence on photoluminescence emission and morphology of BaxSr1-xTiO3 nanocrystalsen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Estadual Paulista, Dept Fis Quim & Biol, BR-19060080 São Paulo, Brazil-
dc.description.affiliationUniv Estadual Paulista, Inst Quim, BR-14801907 São Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Dept Fis Quim & Biol, BR-19060080 São Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, BR-14801907 São Paulo, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofChemical Physics Letters-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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