Structural and hyperfine properties of Ni-doped SnO2 nanoparticles - Herrera Aragón, Fermin Fidel; Coaquira, José Antonio Huamaní; Cohen, Renato; Hidalgo Falla, Maria del Pilar; Nagamine, Luiz Carlos Camargo Miranda; Brito, Silvio Luiz Miranda; Gouvêa, Douglas (Hyperfine Interactions, 2012)