FIELD: making of superconducting materials. SUBSTANCE: mixture of Bi2O3, SrCO3 and CuO corresponding to proportion 2:2:0:1 by cations of Bi, Sr, Ca, Cu as well as mixture of CaCO3 and CuO corresponding to proportion 1:1 by cations of Ca and Cu are prepared. First mixture is sintered at temperature 800 C for 2 h and second mixture - at 1000 C for the course of 8 h in argon. Then after hardening in air both mixtures are mixed, ground and sintering is conducted at temperature 830-850 C in atmosphere of argon for 12-14 h followed by hardening in the air. EFFECT: improved operational characteristics.
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