Experiment MORAVA on board salyut 6—Part III

Abstract The first results of the study of glassy Ge 25 S 55 Sb 20 , prepared under microgravity 10 −6 g and terrestrial conditions are reported. It is shown that the glass prepared in microgravity is more homogeneous and exhibits less tendency to microliquefaction and recrystallization. It can be seen also in differences of the optical and electrical properties of the samples, annealed to the temperature of phase transformation (320°C) and to the temperature of recrystallization (400–425°C). It has been proved, that semiconducting glassy system Ge-S-Sb is useful model material for the systematic study of the influence of the microgravity on the crystallochemical and physical properties of the glassy phase.