PROCESS FOR PRODUCING TAPE-SHAPED Re-TYPE (123) SUPERCONDUCTOR

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This invention provides a tape-shaped superconductor which can realize high Jc and Ic values by virtue of the elimination of the cause of generation of cracks and deterioration of an electrical connectivity in crystal grain boundaries. In producing an Re-base(123) superconductor on a substrate by an MOD method, the use of a raw material solution having a Re : Ba : Cu molar ratio of 1 : X : 3, wherein X is a Ba molar ratio satisfying X 2 and Ic = 525 A/cm (X = 1.5).© KIPO & WIPO 2009