A 109Ag solid-state nuclear magnetic resonance study was made of (AgI)x(AgPO3)1–x glasses. It was demonstrated that, within the glass formation region (x-values between 0 and 0.6), the number of Ag carriers was nearly equal to the fraction of Ag ions which was introduced by AgI. A more than 3 orders of magnitude change in conductivity in going from x = 0.1 to x = 0.5 was attributed mainly to changes in cation mobility. The role played by AgI in affecting the transport properties of these glasses was explained in terms of free volume, mixed O-I coordination, and the opening of percolation channels; in agreement with a modified continuous random network model.

Carrier Density and Mobility in AgI-AgPO3 Glasses - a NMR Study. P.Mustarelli, C.Tomasi, A.Magistris, L.Linati: Physical Review B, 2001, 63[14], 144203 (6pp)