METHOD FOR PRODUCING HIGH-TEMPERATURE SUPERCONDUCTING PARTS Russian patent published in 1997 - IPC

FIELD: manufacture of high-temperature superconducting materials for high-temperature superconducting sensors, such as squid-magnetometers. SUBSTANCE: part is produced from ceramics containing periodic system elements of groups IIA, IIIA, IVB, VB, copper, and oxygen, subjected to heat treatment in oxygen-containing environment, in reducing environment and then, without cooling the part, in oxidizing environment. Parts made of high-temperature superconducting material are characterized in that magnetic flux entrapped by them at liquid nitrogen temperature in external magnetic field and maintained in them beyond field at 77 K is 2.7-4.6 higher than that of solid parts produced by traditional solid-phase sintering method which is essential for their use in high-frequency squid-magnetometers and cryogenic hysteresis electrical machines. EFFECT: improved superconducting characteristics of parts. 2 cl, 1 tbl