Abstract
The 109 Ag spin-spin and spin-lattice relaxation times for x =0.375 and x =0.5 have been measured in order to elucidate the Ag diffusion dynamics. The results are consistent with the fact that the conductivity rises with increasing x and that the GeS 2 glasses are better conductors than the corresponding B 2 O 3 glasses. Although the spin-lattice relaxation cannot be explained by the simple BPP formula or a Cole-Davidson distribution of correlation times, the data allow to estimate the number of mobile Ag ions. On the NMR time scale all ions are mobile provi---one assumes that the Ag ions “hop” from one iodine ion to the other.
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