Abstract
Nearly single-phase samples of (B0.6C0.4)(Sr0.25Ba0.75)2Ca2Cu3O9 with Tc=119 K have been prepared by a high-pressure synthesis method. Samples were prepared from almost stoichiometric mixture of Ba2Ca2Cu3O7, Sr2Ca2Cu3O7, B2O3 and Ag2CO3. Partial substitution of Ba for Sr is important to prepare samples from stoichiometric compositions.
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