Structural Relaxation at Glass Transition Temperature in Li_2O-B_2O_3 Glassy Ionic System

摘要

Structural relaxation using glass transition kinetics in Li_2O-B_2O_3 glassy system is reported. Amorphous and glassy nature of the samples is confirmed by X-Ray diffraction (XRD) and Differential Scanning Calorimetry (DSC). The activation energy for structural relaxation at T_g, obtained from glass transition kinetics using Moynihan equation, exhibits interesting trend with Li_2O content. It is observed that due to such structural relaxation at the glass transition temperature the ionic conductivity exhibits an anomalous rise, deviating from Arrhenius behavior.