METHOD OF PREPARING SUPERCONDUCTING MONOCRYSTALS BASED ON BiSrCaCuO Russian patent published in 1997 - IPC

FIELD: superconducting materials. SUBSTANCE: invention relates to preparing high-temperature superconductors, in particular those based on Bi₂Sr₂CaCu₂O₈, for applying as active elements in microwave technics operating on the basis of Josephson effect. Preparation method includes melting charge containing oxides and carbonates followed by crystallization and is distinguished with that the charge is composed of Bi₂Sr₂CaCu_2-xMn_xO₈ where 0,1 ≅ x ≅ 0,3. Crystals with size (2- 3) x (2-4) mm in (ab) plane, immediately after growing, are characterized with Tendc