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Structural characterization and photoluminescence behavior of pure and doped potassium strontium niobates ceramics with tetragonal tungsten-bronze structure

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dc.contributor.authorLima, A. R.F.
dc.contributor.authorSczancoski, J. C. [UNESP]
dc.contributor.authorSiu Li, M.
dc.contributor.authorLongo, E. [UNESP]
dc.contributor.authorCamargo, E. R.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2018-12-11T17:26:55Z
dc.date.available2018-12-11T17:26:55Z
dc.date.issued2016-03-01
dc.description.abstractKSr2Nb5O15 and K1.2Sr1.6Ln0.2Nb5O15 (Ln=La, Pr, and Nd) were synthesized by the Pechini method and calcined at 1373 K for 10 h under air atmosphere. Rietveld refinements indicated the presence of structural defects in both KSN and KSN-Ln, especially distortions in O-Nb-O and Nb-O-Nb bonds. Modifications in bond distances of [NbO6] clusters were also confirmed by Raman spectroscopy. Ultraviolet-visible absorption spectra and photoluminescence profiles were influenced by lanthanide atoms in the band structure of modified KSN materials, creating new defects and intermediary energy levels within the band gap.en
dc.description.affiliationLIEC-Departamento de Química UFSCar Universidade Federal de São Carlos, Rod. Washington Luis, km 235, CP 676
dc.description.affiliationInstituto de Química UNESP Universidade Estadual Paulista
dc.description.affiliationIFSC-Universidade de São Paulo
dc.description.affiliationUnespInstituto de Química UNESP Universidade Estadual Paulista
dc.format.extent4709-4714
dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2015.11.130
dc.identifier.citationCeramics International, v. 42, n. 4, p. 4709-4714, 2016.
dc.identifier.doi10.1016/j.ceramint.2015.11.130
dc.identifier.file2-s2.0-84955667748.pdf
dc.identifier.issn0272-8842
dc.identifier.scopus2-s2.0-84955667748
dc.identifier.urihttp://hdl.handle.net/11449/177745
dc.language.isoeng
dc.relation.ispartofCeramics International
dc.relation.ispartofsjr0,784
dc.rights.accessRightsAcesso abertopt
dc.sourceScopus
dc.subjectC. Optical properties
dc.subjectCeramics
dc.subjectCrystal structure
dc.subjectOptical materials
dc.subjectX-ray diffraction
dc.titleStructural characterization and photoluminescence behavior of pure and doped potassium strontium niobates ceramics with tetragonal tungsten-bronze structureen
dc.typeArtigopt
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 - IQpt

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