New quaternary fast ion-conducting glasses were prepared by using melt-quenching techniques. The samples had various dopant salt (AgI) concentrations (table 2), while the modifier (Ag2O) to former (MoO3+As2O5) ratio was fixed. Impedance measurements were performed as a function of frequency (6.5Hz to 65kHz) and temperature (303 to 343K), and the bulk conductivity was deduced from the impedance analysis. The alternating-current conductivity was calculated for various AgI contents, at a range of temperatures, and the results were analyzed by using Jonscher’s law. The conduction mechanism for the highest-conductivity glass was explained in term of the diffusion-path model.

N.Satyanarayana, A.Karthikeyan, M.Venkateswarlu: Journal of Materials Science, 1996, 31[20], 5471-7

Table 2

Ionic Conductivity of AgI-Ag2O-(MoO3-As2O5) Glasses