Electrical behaviour of superionic conducting AgI-Ag2O-TeO2 glasses

New glasses in the system xAgI. (1-x) [Ag2O: TeO2] were prepared and investigated. The glass forming region in this system is identified by x-ray diffraction. The amorphous nature of glasses of <60 mol% AgI is verified while some crystalline phases from AgI are evidenced in the samples with higher AgI concentration (>60 mol%). Some physical properties of glasses in the above given system have been studied. Conductivity measurements revealed that the optimum value of conductivity at room temperature is in the order of 10(-2) S/cm at about 60 mol% AgI. The highest conduction at about 60 mol% AgI was correlated to the creation of maximum pathways which favour for Ag+ ion transporting mechanism. Formation of some crystalline phases from AgI at higher concentrations (>60 mol% AgI) was considered the main reason for decreasing the conduction of AgI rich glasses. The open network model was proposed to explain the Ag+ ion transport mechanism in the AgI Ag2O-TeO2 glasses.