Existence of Multiple Glass Transitions in Amorphous Sb Doped Ge S Glassy Alloys

In this experimental work, an amorphous alloy of Ge25S75-xSbx (where x = 0% and 5%) was made and tested for its glassy behavior. The amorphous alloy was made under vacuum of 10-5 Torr with 12 hours rocking and then with quenching technique. It was observed that three multiple endothermic peaks were appeared around 70 – 120 oC in x = 0% which then with addition of Sb got flattened and spread more widely with lower enthalpy showing existence of three glassy states in the material. This behavior is explained in terms of local electron density of the system. Keywords: Amorphous alloys, Calorimetry, glasses, alloys, vacuum and quenching.