Abstract
Electrical impedance measurements as a function of frequency were carried out on a CdF 2LiFAlF 3PbF 2 (CLAP) glass both below and above the glass transition temperature. Data were analyzed in the electric modulus formalism, and the Kohlrausch-Williams-Watts β parameter characterizing the width of the distribution of electric field relaxation times determined. β was temperature-independent for the glass below the glass transition temperature, T g, but decreased with increasing temperature for the melt above T g. A similar temperature dependence of β above T g has been observed for fused nitrate, alkali silicate, alkali borosilicate and lead borate melts and for extremely concentrated electrolyte solutions, suggesting that this is a general phenomenon for ionically conducting liquids with large concentrations of mobile ions.
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