FIELD: chemistry.
SUBSTANCE: crystals are grown using the Kyropoulos method with an optimum annealing mode, carried out while lowering temperature of the grown monocrystal to 1200°C at a rate of 10-15°C/hour and then cooling to room temperature at a rate of 60°C/hour.
EFFECT: obtaining large monocrystals with less stress in the entire volume, and which are suitable for mechanical processing in order to obtain crystal wafers with zero orientation.
1 ex, 1 dwg
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