Effect of Dy2O3 on Electrical Conductivity, Dielectric Properties and Physical Properties in Lithium Borosilicate Glasses

Glass series with general formula 30Li(2)O-(70-x) [1/7SiO(2):6/7B(2)O(3)]-xDy(2)O(3) was prepared using conventional melt quench technique. The Impedance spectroscopy (IS) measurement were carried out by Impedance Analyzer in the frequency range 2 mHz to 20 MHz in the temperature range 423 K to 673 K. Addition of dysprosium oxide in borosilicate glasses affects density, molar volume and glass transition temperature. Electric modulus data has been analyzed to study relaxation behavior. The dielectric constant (epsilon') and dielectric loss (tan delta) of prepared glasses gradually decreases with increase in frequency and decrease in temperature due to electron hopping.