Abstract
Conductivity measurements and modulus formalism have been used to study the transport properties of PbI 2 doped silver boro-vanadate glasses prepared by melt quenching technique. The samples are characterized by XRD and DSC measurements. A correlation between R τ , the decoupling index and σ DC has been discussed. The observed conductivity values suggest enhancement in conductivity by the introduction of PbI 2 salt in the host glass matrix. AC conductivity data are analyzed by fitting the data to Jonscher's universal power law, σ′(ω) = σ DC + Aω n. The power law exponent, n, is found to be independent of temperature and composition. The experimental modulus spectra are analyzed and calculated the stretched exponential constant β using the non-linear KWW decay function. Furthermore, the scaling of both ac conductivity and electric modulus at different temperatures is found to merge near perfectly on to a single master curve suggesting that all the dynamic processes possess good time temperature superposition.
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