The effect of high pressures on the conductivity of glassy composites in this system was studied. The conductivity of pure glasses decreased with pressure, while glass composites which were highly doped with AgI exhibited an increase. The decrease in conductivity reflected a stronger interaction of the mobile ions and the surrounding network ions under high pressures, resulting in a higher energy barrier for ion motion. It was suggested that, in composite materials, crystalline β/γ AgI precipitates were responsible for a conductivity increase under high pressures.

Ionic Resistivity of Ag2O-P2O5-AgI Superionic Materials under High Pressures. Z.Wisniewski, R.Wisniewski, J.L.Nowinski: Molecular Physics Reports, 2000, 27, 131-6