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dc.contributor.authorLima, S. M.-
dc.contributor.authorAndrade, L. H. C.-
dc.contributor.authorFalcao, E. A.-
dc.contributor.authorSteimacher, A.-
dc.contributor.authorAstrath, N. G. C.-
dc.contributor.authorMedina, A. N.-
dc.contributor.authorBaesso, M. L.-
dc.contributor.authorOliveira, R. C.-
dc.contributor.authorMoraes, João Carlos Silos-
dc.contributor.authorYukimitu, K.-
dc.contributor.authorAraujo, E. B.-
dc.identifier.citationApplied Physics Letters. Melville: Amer Inst Physics, v. 94, n. 25, p. 3, 2009.-
dc.description.abstractIn this study, thermal lens spectrometry was applied to determine the thermo-optical properties of fragile tellurite glasses as a function of temperature, close to the glass transition region. The results showed an inversion from positive to negative values in the temperature coefficient of the optical path length occurring after the glass transition temperature, which is the region where structural changes from the TeO(4) trigonal bipyramidal unit to a TeO(3) trigonal pyramid containing nonbridging oxygen take place. In addition, the thermal diffusivity values as a function of temperature exhibited behaviors that were related to thermodynamic and kinetic structural changes in the glass.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipAraucaria Foundation-
dc.publisherAmerican Institute of Physics (AIP)-
dc.sourceWeb of Science-
dc.subjectglass transitionen
dc.subjectlithium compoundsen
dc.subjectoptical glassen
dc.subjecttellurium compoundsen
dc.subjectthermal diffusivityen
dc.subjectthermal lensingen
dc.subjectthermodynamic propertiesen
dc.subjecttitanium compoundsen
dc.titleInversion in the temperature coefficient of the optical path length close to the glass transition temperature in tellurite glassesen
dc.contributor.institutionUniversidade Estadual de Mato Grosso do Sul (UEMS)-
dc.contributor.institutionUniversidade Estadual de Maringá (UEM)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Estadual Mato Grosso Sul, Grp Espectroscopia Opt & Fototerm, BR-79804970 Dourados, MS, Brazil-
dc.description.affiliationUniv Estadual Maringa, Grp Estudos Efeitos Fototerm, BR-87020900 Maringa, Parana, Brazil-
dc.description.affiliationUniv Estadual Paulista, Grp Vidros & Ceram, BR-15385000 São Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Grp Vidros & Ceram, BR-15385000 São Paulo, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofApplied Physics Letters-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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