Ag glasses based on Zn-phosphate

The partial substitution of Zn²⁺ for Ag⁺ in Ag₄P₂O₇ leads to the formation of a wide glassy domain of composition Ag₄P₂O₇] _(1?y) Zn₂P₂O₇] _(y) with 0.20y0.87. The introduction of AgI in these materials results in a new series of glasses of formula (Ag₄P₂O₇)_(1?y) (Zn₂P₂O₇)_(y)] _(1?X) AgI] _(x), which domain for the composition y = 0.25 corresponds to 0x 0.64. The structure as well as the thermal and electrical properties of these materials are compared with those of the AgPO₃] _(1?X) AgI] _(x) and Ag₄P₂O₇] _(1?x) AgI] _(x) glasses.