Measurements of the alternating-current conductivity of glasses, at temperatures of between -84 and -154C, permitted the direct-current conductivities and ion hopping-rates to be deduced. The ion hopping-rate values were confirmed by performing mechanical relaxation measurements at frequencies of 1.25 and 10MHz. The anomalously high conductivity pre-factor of 6.3 x 105SK/cm was associated with a large entropy of activation. A simple Dienes relationship between entropy and activation energy was shown to hold for a range of glassy Ag+ conductors.

D.P.Almond, G.K.Duncan, A.R.West: Journal of Non-Crystalline Solids, 1985, 74[2-3], 285-301