KINETIC-STUDIES OF THE GLASS-TRANSITION IN (SE65TE35)(100-X)SB-X BY DIFFERENTIAL SCANNING CALORIMETRY

Calorimetric studies of chalcogenide glasses, (Se65T35)(100-x)Sb-x, ob tained by ice-water quenching, were performed by a non-isothermal meth od. An X-ray diffraction study, as a function of temperature, was carr ied out, with samples of different compositions. The activation energy for relaxation time, was determined from the heating-rate dependence of values of the glass transition temperature, as a function of x. A m aximum in Delta E(t) versus antimony concentration occurs at 1-2 at%. Sb-121 Mossbauer results confirm the formation of Sb2Se3, by crystalli zation.