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Synthesis and structural characterization of Eu(III)-doped Zn7Sb2O12

dc.contributor.authorSilva, A. C. S. [UNESP]
dc.contributor.authorSouza, G. G. [UNESP]
dc.contributor.authorNobre, Marcos Augusto Lima [UNESP]
dc.contributor.authorPires, A. M. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:23:02Z
dc.date.available2014-05-20T13:23:02Z
dc.date.issued2010-08-01
dc.description.abstractIn addition to the lanthanide series elements, Europium is one of the chemical elements of greatest interest for the development of species with oxidation state +3 (III), which leads to interesting electronic transitions. In a general sense, their emission spectrum lines are narrow and sensitive to effects of the ligand field around metallic ions. This property allows the use of Eu(III) as a structural probe. In this work, samples of semiconductor Zn7Sb2O12 and of solid solutions based on isoelectronically Eu(III)-doped Zn7Sb2O12 with stoichiometry Zn7-3xEu2xSb2O12 were prepared. Both Zn7Sb2O12 and Zn7-3xEu2xSb2O12 were synthesized via a chemical route using Pechini's method and characterized by Fourier transform infrared absorption vibrational spectroscopy (FTIR) and photoluminescence spectroscopy. In order to perform further spectral analyses, each spectrum was adjusted using a set of Gaussian functions. The FTIR spectrum analysis showed a slight band shift of the vibration mode assigned to the Sb-O bonding ascribed to the [SbO6] octahedron vibration. The theoretical fitting of the luminescence curves showed a broadening of the most intense emission peaks related to the transition Eu(III) D-5(0) -> F-7(2). As a whole, the results suggest that a less symmetric Eu(III) site occupation in inverse spinel structure may occur in sites close to the antimony octahedron, involving, however, non-substitutional site occupation.en
dc.description.affiliationUnesp Univ Estadual Paulista, Fac Ciencias & Tecnol, Depto Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationUnespUnesp Univ Estadual Paulista, Fac Ciencias & Tecnol, Depto Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent4216-4223
dc.identifierhttp://dx.doi.org/10.1007/s10853-010-4516-2
dc.identifier.citationJournal of Materials Science. New York: Springer, v. 45, n. 15, p. 4216-4223, 2010.
dc.identifier.doi10.1007/s10853-010-4516-2
dc.identifier.issn0022-2461
dc.identifier.lattes5408864375841292
dc.identifier.lattes7201928600704530
dc.identifier.orcid0000-0003-4843-3975
dc.identifier.urihttp://hdl.handle.net/11449/6877
dc.identifier.wosWOS:000278580100036
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal of Materials Science
dc.relation.ispartofjcr2.993
dc.relation.ispartofsjr0,807
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleSynthesis and structural characterization of Eu(III)-doped Zn7Sb2O12en
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes5408864375841292[4]
unesp.author.lattes7201928600704530
unesp.author.orcid0000-0003-4843-3975[3]
unesp.author.orcid0000-0001-9607-0510[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept
unesp.departmentFísica, Química e Biologia - FCTpt

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