The effects of pressure and densification on ionic conductivities in silver iodomolybdate glasses

Conductivities have been measured for glasses in the AgI–Ag2O–MoO3 system at pressures from 0 to 10 kbar, and in glasses previously densified at 50 kbar. All the glasses show a progressive decrease in conductivity with increasing pressure. The activation volumes for Ag+ ion migration fall in the range 2.8–2.1 cm3 mol−1, decreasing with increasing AgI content. Similar decreases in conductivity were brought about by densification, indicating that new glasses can be prepared with properties dependent upon their pressure history.