Fast-ion conducting glasses, with very high AgI compositions, were successfully prepared in the (AgI)x(AgPO3)1-x, (AgI)x(Ag2PO3.5)1-x and (AgI)x(Ag3PO4)1-x systems by using rapid press-quenching and twin-roller quenching methods. Alternating-current dielectric measurements revealed common relaxation properties for Ag+-ion conduction in the glasses; regardless of the species of glass network formers: AgPO3, Ag2PO3.5, Ag3PO4. The activation energies for Ag+-ion conduction converged upon the same value, of about 26kJ/mol, at the AgI composition limit of x = 1. This indicated the formation of amorphous AgI regions in the glasses. The value of 26kJ/mol, estimated at x = 1, was concluded to correspond to that for bulk amorphous AgI; which had never been obtained experimentally.

Activation Properties of Ag+-Ion Conduction in Bulk Amorphous AgI - Estimation from Extrapolation of the AgI Composition Dependence in AgI–Ag2O–P2O5 Glasses. M.Hanaya, A.Hatate, M.Oguni: Journal of Physics - Condensed Matter, 2003, 15[23], 3867-73