Abstract
Effect of La2O3 addition on electrical and optical properties of lithium borate glass has been studied in the present work. Glass system with general formula 27.5 Li2O–(72.5−X) B2O3–X La2O3 was prepared by normal melting process. Electrical properties were studied by impedance spectroscopy. Scaling behavior was introduced to study dynamical process. In order to study optical properties, absorption spectra were measured at room temperature. Direct and indirect optical band gap, Urbach energy and Fermi energy were calculated from absorption spectra using functionality of extinction coefficient from Fermi–Dirac distribution function. Optical parameter shows the dependence on physical properties i.e. density and molar volume. There is good correlation between electrical and optical properties.
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