Dielectric relaxation in glassy Se ₉₀ Cd ₆ In ₄

Abstract

In the present Letter frequency (5 × 10 2 Hz-1 × 10 5 Hz) and temperature (308-333 K) dependence of dielectric parameter of Se 90 Cd 6 In 4 glassy alloy has been examined. Conventional melt quench technique has been applied to prepare Se 90 Cd 6 In 4 glassy alloy. It is observed that dielectric constant (ε ′) and dielectric loss factor (ε″) change with frequency and temperature. The dielectric loss data has been utilised to determine the barrier height W m , which is in accordance with the Elliott's theory of hoping of charge carriers over potential barrier between charge defect states in case of chalcogenide glasses.