Mechanochemical synthesis was used to obtain highly conducting amorphous materials of the form, xAgI-(100−x)[0.5Ag2O, 0.5CrO3], with x = 50, 60 or 70. The ionic conductivity of ball-milled amorphous samples was found to be about 10−2S/cm at room temperature. This was some 3 orders of magnitude higher than that of AgI, and was comparable to that of superionic glasses having the same composition. The amorphous samples were stable at up to about 100C. Upon annealing the samples at about 110C, AgI and Ag2O nanocrystallites (~10nm) were precipitated. The ionic transport number was found to be near to unity for all of the samples.

Transport Studies of Mechanochemically Synthesized Amorphous AgI-Ag2O-CrO3 Superionic System. A.Dalvi, K.Shahi: Solid State Ionics, 2003, 159[3-4], 369-79