Abstract
The frequency dependence of conductivity has been studied over a large temperature range in Ag + and Li + ionic conductive glasses. The activation energies E′ ac deduced from the Arrhenius plot of σ ac are independent of the frequency. They are comparable with the activation energies deduced from the low-temperature branch of NMR curves log 1/ T 1 = f (1/ T). The empirical factor β = E′ ac/ E dc has been deduced from these results. Fitting the curves to log σ ac = f (log ω) leads to values of S that are dependent on the temperature.
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