The conductivities of rapidly quenched glasses, with a Ag2O/B2O3 ratio of 3, were measured at temperatures ranging from 200 to 400K. It was found that the activation energy for conduction in a glass with 50mol%AgI did not vary over the entire temperature range. However, the activation energies for glasses with 60 or 70mol%AgI changed appreciably at about 240K. The activation energies below 240K were higher than those above 240K. Glasses which contained 60 to 80mol%AgI had inhomogeneous morphologies. The inhomogeneities in rapidly-quenched glasses which contained large amounts of AgI were suggested to be closely related to the observed change in activation energy at about 240 K.

T.Saito, N.Torata, M.Tatsumisago, T.Minami: Solid State Ionics, 1996, 86-88[1], 491-5