Abstract
Inlaying two RE ions simultaneously in the glass network, greatly impacts its properties and therefore its study is paramount. A glass series with composition 60B2O3 + 30NaF + 10Al2O3 + (1 − x) Dy2O3 + (x/3)Pr6O11 (where x = 0, 0.2, 0.5, 0.7 and 1 mol%) was prepared by melt quenching technique. The influence of both composition, concentration of rare earth ions and temperature variation in wide frequency range on electrical properties were investigated. The DC and AC conductivity curves for all the prepared compositions obeyed Arrhenius relation and Jonscher’s Power law, respectively. The frequency exponent “s” parameter was obtained to study the conductivity mechanism. Dielectric parameters were observed to be decreasing with a rise in frequency and increasing with temperature. Electric Modulus and Nyquist Plots for all compositions were studied to examine the relaxation behavior in prepared glasses as Debye or non-Debye. Depressed semicircular Nyquist plots were observed.
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