FIELD: chemistry.
SUBSTANCE: invention can be used in chemical industry. The method involves calcining a heteropolynuclear complex of nitrates of rare-earth elements, copper (II), barium and quinoline, after preliminary calcining, cooling and homogenisation. Basic calcining is carried out at temperature of 850°C for the yttrium subgroup, and at 750°C for the cerium subgroup.
EFFECT: method enables to lower synthesis temperature by 50-80°C for the yttrium subgroup, and at 100-130°C for the cerium subgroup, and also widens the range of cuprates of rare-earth elements and barium for the entire range of rare-earth elements.
2 ex
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