FIELD: production of high-temperature superconductors. SUBSTANCE: method involves the steps of: crystallizing solution-melt in a double crucible the inner one of which has an opening in the bottom, lifting the inner crucible at a speed of not more than 3 mm/hr after crystallization, then fast cooling at a speed of not more than 60 C/hr. EFFECT: enhanced dimensions of crystals up to 3x3x0.5 mm, three times enhanced yield, enhanced convenience in withdrawing crystals. 2 dwg, 1 tbl
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