Experimental evidences of substitutional solution of Er dopant in Er-doped Sn'O IND. 2' nanoparticles - Herrera Aragón, Fermin Fidel; Coaquira, José Antonio Huamaní; Hidalgo Falla, Maria del Pilar; Cohen, Renato; Nagamine, Luiz Carlos Camargo Miranda; Da Silva, S. W; MoraIs, P. C; Brito, Hermi Felinto de (Journal of Nanoparticle Research, 2013)