50 anos da UNESP
Logotipo do repositório

Photoluminescence behavior in MgTiO3 powders with vacancy/distorted clusters and octahedral tilting

Página do item simplificado
dc.contributor.authorFerri, E. A. V.
dc.contributor.authorSczancoski, J. C.
dc.contributor.authorCavalcante, L. S.
dc.contributor.authorParis, E. C.
dc.contributor.authorEspinosa, J. W. M. [UNESP]
dc.contributor.authorde Figueiredo, A. T. [UNESP]
dc.contributor.authorPizani, P. S.
dc.contributor.authorMastelaro, V. R.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:33:16Z
dc.date.available2014-05-20T15:33:16Z
dc.date.issued2009-09-15
dc.description.abstractMgTiO3 powders were prepared by the complex polymerization method and heat treated at different temperatures for 2 h. These powders were analyzed by X-ray diffraction (XRD), Rietveld refinements, micro-Raman (MR) spectroscopy, X-ray absorption near edge spectroscopy (XANES), ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements. XRD patterns and MR spectra showed that the crystalline powders have a rhombohedral structure. XANES spectra indicated that the local structure of crystalline MgTiO3 powders is composed only by [TiO6] clusters, while the disordered exhibit the simultaneous presence of both [TiO5]and [TiO6] complex clusters into the lattice. UV-vis spectra revealed different optical band gap values as a function of heat treatment temperature. This result can be an indicative of intermediary energy levels within the band gap of this material because of structural defects into the perovskite-type structure. PL behavior was attributed to the structural order-disorder and/or distortions on the [TiO6]-[TiO6] complex clusters. (c) 2009 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, LIEC IQ, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationIFSC USP, BR-13560970 São Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, LIEC IQ, BR-14801970 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.sponsorshipEAPESP
dc.description.sponsorshipLaboratório Nacional de Luz Síncrotron (LNLS)
dc.description.sponsorshipIdLNLS: D04B - XAFS1 - 8050
dc.format.extent192-198
dc.identifierhttp://dx.doi.org/10.1016/j.matchemphys.2009.05.042
dc.identifier.citationMaterials Chemistry and Physics. Lausanne: Elsevier B.V. Sa, v. 117, n. 1, p. 192-198, 2009.
dc.identifier.dimensionspub.1014780137
dc.identifier.doi10.1016/j.matchemphys.2009.05.042
dc.identifier.issn0254-0584
dc.identifier.issn1879-3312
dc.identifier.orcid0000-0002-5914-1671
dc.identifier.orcid0000-0002-6512-2530
dc.identifier.orcid0000-0001-8599-9674
dc.identifier.orcid0000-0002-8233-3268
dc.identifier.orcid0000-0002-0782-4876
dc.identifier.orcid0000-0003-0211-4098
dc.identifier.orcid0000-0002-0928-9619
dc.identifier.orcid0000-0002-1002-1521
dc.identifier.orcid0000-0003-0415-2944
dc.identifier.orcid0000-0001-8062-7791
dc.identifier.urihttp://hdl.handle.net/11449/41948
dc.identifier.wosWOS:000269291500036
dc.language.isoeng
dc.publisherElsevier B.V. Sa
dc.publisherElsevier
dc.relation.ispartofMaterials Chemistry and Physics
dc.relation.ispartofjcr2.210
dc.relation.ispartofsjr0,615
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.sourceDimensions
dc.subjectOptical materialsen
dc.subjectChemical synthesisen
dc.subjectXAFSen
dc.subjectLuminescenceen
dc.titlePhotoluminescence behavior in MgTiO3 powders with vacancy/distorted clusters and octahedral tiltingen
dc.typeArtigopt
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

Arquivos

Coleções

Araraquara - IQAR - Instituto de Química