АНАЛИЗ ПРИЧИН НЕОДНОРОДНОСТИ ТЕЛЛУРА В КРИСТАЛЛЕ АНТИМОНИДА ГАЛЛИЯ, ВЫРАЩЕННОМ В КОСМИЧЕСКОМ ЭКСПЕРИМЕНТЕ

Quantitative X−ray topography of GaSb : Te crystal, grown during unmanned Chinese space experiment has showed a high structural perfection in its greater area, which corresponds to the crystallization of a rounded interface. At the same time, the defects in the field of a face growth have been revealed after some time of the crystallization onset. The control of parameters during the growth process was absent. It was a reason for a reconstruction of the crystal growth history using a two−dimensional map of the measured Te concentrations in the crystal and mathematical modeling of the growth process, and taking into account the analysis of possible factors that influenced the growth crystal characteristics.