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dc.contributor.authorBadapanda, T.-
dc.contributor.authorRout, S. K.-
dc.contributor.authorCavalcante, L. S.-
dc.contributor.authorSczancoski, J. C.-
dc.contributor.authorPanigrahi, S.-
dc.contributor.authorLongo, Elson-
dc.contributor.authorLi, M. Siu-
dc.identifier.citationJournal of Physics D-applied Physics. Bristol: Iop Publishing Ltd, v. 42, n. 17, p. 9, 2009.-
dc.description.abstractIn this work, Ba(Zr0.25Ti0.75)O-3 ceramic was prepared by solid-state reaction. This material was characterized by x-ray diffraction and Fourier transform Raman spectroscopy. The temperature dependent dielectric properties were investigated in the frequency range from 1 kHz to 1 MHz. The dielectric measurements indicated a diffuse phase transition. The broadening of the dielectric permittivity in the frequency range as well as its shifting at higher temperatures indicated a relaxor-like behaviour for this material. The diffusivity and the relaxation strength were estimated using the modified Curie-Weiss law. The optical properties were analysed by ultraviolet-visible (UV-vis) absorption spectroscopy and photoluminescence (PL) measurements at room temperature. The UV-vis spectrum indicated that the Ba(Zr0.25Ti0.75)O-3 ceramic has an optical band gap of 2.98 eV. A blue PL emission was observed for this compound when excited with 350 nm wavelength. The polarity as well as the PL property of this material was attributed to the presence of polar [TiO6] distorted clusters into a globally cubic matrix.en
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.publisherIop Publishing Ltd-
dc.sourceWeb of Science-
dc.titleOptical and dielectric relaxor behaviour of Ba(Zr0.25Ti0.75)O-3 ceramic explained by means of distorted clustersen
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)-
dc.contributor.institutionNatl Inst Technol-
dc.contributor.institutionBirla Inst Technol-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), BR-13565905 São Carlos, SP, Brazil-
dc.description.affiliationNatl Inst Technol, Dept Phys, Rourkela 769008, India-
dc.description.affiliationBirla Inst Technol, Dept Appl Phys, Ranchi 835215, Bihar, India-
dc.description.affiliationUniv Estadual Paulista, BR-14801907 Araraquara, SP, Brazil-
dc.description.affiliationUniv São Paulo, IFSC, BR-13560970 São Carlos, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, BR-14801907 Araraquara, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Physics D: Applied Physics-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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