IONIC-CONDUCTIVITY IN SILVER-DISSOLVED ALPHA-CUI

The electrical conductivity and the transference number of silver-diss olved alpha-CuI in the superionic phase were measured as a function of temperature and composition. It was recognized that both Ag and Cu io ns could be mobile and the activation energy for AE ions is smaller th an that for Cu ions. It is emphasized that the size of the Ag ion is m ore suitable for conduction than that of the Cu ion in this phase. Sin ce the ionic radius for the Ag ion is larger than that of the Cu ion, we propose a model other than the gate model to explain this experimen tal fact.