THERMAL ANALYSIS OF TeO2-Nb2O5-Li2O-Sm2O3 GLASS SYSTEM

Abstract

A series of samarium-doped tellurite glass on the (70-x) TeO₂-20Nb₂O₅-10Li₂O-(x) Sm₂O₃ system, where x is 0 to 5mol.% has successfully been made by melt quenching technique. The density and the thermal parameters, such as T_g, T_c, T_m, and glass stability, have been determined by Differential Thermal Analysis (DTA). It is found that the variation in glass density with Sm₂O₃ content shows an increasing trend. It is also observed that the T_g and T_c were both compositionally dependent. Meanwhile, the glass stability (T_c-T_g) is highly dependent on the Sm₂O₃ content.