Structural conditions that leads to photoluminescence emission in SrTi'O IND.3': an experimental and theoretical approach - Longo, V. M.; Figueiredo, A. T.; Lázaro, S. de; Gurgel, M. F.; Costa, M. G. S.; Santos, C. O. Paiva; Varela, José Arana; Longo, Elson; Mastelaro, Valmor Roberto; De Vicente, Fábio Simões; Hernandes, Antônio Carlos; Franco, R. W. A. (Journal of Applied Physics, 2008)