Influence of the nano-crystals in the ion dynamics of Pb-Cd fluorgemanate glass-ceramics investigated by conductivity and NMR - Donoso, José Pedro; Tambelli, C. C.; Magon, Claudio José; Ribeiro, S. J. L.; Messaddeq, Younnes; Bueno, L. A. (Encontro da Sociedade Brasileira de Pesquisa em Materiais - SBPMat, 2004)