Frequency response analysis of ionically conducting mixed system (1-x)CuI - xAg2MoO4 (0.15 ≤ x ≤ 0.55)

A systematic analysis of the electrical response of the mixed system (1-x)CuI — xAg₂MoO₄ (0.15≤x≤0.55) over the temperature range 297 – 447 K in the 20 Hz — 1 MHz frequency domain has been reported. Relaxation processes associated with individual compositions of this heterogeneous mixture of polycrystalline samples have been identified through a combined analysis of modulus and impedance spectral formalisms. The detailed analysis of these relaxation processes has indicated that AgI and Ag₂MoO₄ phases are the predominant sources of electric conduction in the case of samples in the composition region 0.33≤x≤0.55 whereas in those samples having x<0.33, the presence of Cu₂MoO₄ phase in the mixture is found to make a definite contribution to their effective electric conduction.