Abstract
AbstractThe electrical properties of new borate‐based glasses in the system La2O3‐Gd2O3‐PbO‐MnO2‐B2O3, prepared by the melt‐quenching technique, were investigated. All of these glasses have a fixed content of B2O3 (%mol = 30). The electrical measurements were carried out by impedance spectroscopy in the frequency range from 100 Hz to 1 MHz, and temperatures from 100 to 400°C, below the glass temperature. The AC conductivity increases with temperature according to the Arrhenius law, with a single activation energy. The structural and thermal properties of the glasses were investigated by performing infrared spectroscopy, X‐ray diffraction, and differential thermal analysis. The dependence of the various electrical parameters as a function of the glass composition and temperature was discussed. Evaluations of models and theory of the relaxation mechanisms were predominantly made through comparison with experimental data and a set of phenomenological parameters.
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