By analyzing frequency- and temperature-dependent conductivity data for xAgI(1-x)AgPO3 glasses, with x = 0.10 to 0.55, it was found that the number density of mobile ions, as well as the ionic relaxation mechanism, were independent of the temperature and composition. It was suggested that this result was important in clarifying the controversial role played by AgI in the ion transport of these glasses. The observations were also expected to influence the general understanding of fast-ion conduction in glass. In the frequency range covered here, from below a few MHz, no super-linear dependence of the conductivity upon frequency, as reported previously, was observed.

Role of AgI for Ionic Conduction in AgI-AgPO3 Glasses. B.Roling, M.D.Ingram, M.Lange, K.Funke: Physical Review B, 1997, 56[21], 13619-22