Effect of copper on thermomechanical characteristics of amorphous AsSeyIz

The paper describes results of a study of glasses of the type Cu-x(AsSe1.4I 0.2)(100-x) for x=0, 1, 5, 10, 15, 20 and 25 at% Cu, by the methods of ther momechanical analysis. Values of the thermal coefficients of linear expansi on in solid and visco-plastic phase were determined and the dependence of t his parameter on copper concentration was established. The experimental met hod used enabled the determination of characteristics glass transition temp erature and the temperature of the beginning of deformation, and it was fou nd that these parameters increase with increase in the copper content.