CRYSTALLIZATION STUDIES ON CUXGE15TE85-X GLASSES

Differential scanning calorimetric (DSC) studies have been carried out in an attempt to explain the composition dependence of the thermal cr ystallization behaviour of CuxGe15Te85-x glasses. It is seen that thes e glasses exhibit a single glass transition and single-stage crystalli zation on heating. The glass transition temperature, crystallization t emperature and the activation energy for crystallization are each foun d to exhibit an anomaly at around the composition x = 5. The anomalies observed in the thermal properties at x = 5 can be associated with ri gidity percolation.