Calorimetric measurements on Te-Bi-Se glasses with variation in Se content

摘要

The alloys of Te-Bi-Se glass system, obtained by rapid quenching technique, have been characterized by calorimetric measurements and differential thermal analysis for different heating rates. In the present work, a systematic investigation of crystallization kinetics of Te-Bi-Se glass system is carried out for the composition range in which amorphous alloys with a large glass forming ability in Se-based systems, the glass transition temperature Tg and the peak temperature Tp at different heating rates have been studied with the increase in Se content. With the increase in heating rates, Tg and Tp are found to increase. This analysis helps in finding the suitability of an alloy to be used in phase transition optical memories/switches. Thermal stability of these glasses is found in good command to form the glasses with ease.