de Figueiredo, Alberthmeiry T.Longo, Valeria M.de Lazaro, SergioMastelaro, Valmor R.De Vicente, Fabio S.Hernandes, Antonio C.Li, Maximo SiuVarela, José Arana [UNESP]Longo, Elson [UNESP]2014-05-202014-05-202007-10-01Journal of Luminescence. Amsterdam: Elsevier B.V., v. 126, n. 2, p. 403-407, 2007.0022-2313http://hdl.handle.net/11449/37818Blue-green and red photoluminescence (PL) emission in structurally disordered CaTiO3:Sm (CT:Sm) powders was observed at room temperature with laser excitation at 350.7 nm. The perovskite-like titanate CT:Sm powders prepared by a soft chemical processing at different temperatures of annealing were structurally characterized by X-ray diffraction (XRD) and X-ray absorption near-edge structure (XANES). The results indicate that the generation of the broad PL band is related to order-disorder degree in the perovskitelike structure. (c) 2006 Elsevier B.V. All rights reserved.403-407engluminescenceorder-disorderoptical materialsCT : SmArtigo10.1016/j.jlumin.2006.08.100WOS:000247409900022Acesso restrito84082163499573780000-0001-7696-3004