Patent ID: 8772201

Claim:
An oxide superconducting conductor comprising: an oxide superconducting layer comprising a substrate and an oxide superconductor formed on the substrate, the oxide superconductor being expressed by a composition formula of RE 1 Ba 2 Cu 3 O y where RE represents a rare earth element and an expression of 6.5<y <7.1 is satisfied, wherein a normal conduction phase including Ba and a different phase including an alkaline earth metal having an ionic radius smaller than that of Ba are dispersed in the oxide superconducting layer, the normal conduction phase is an oxide including Ba and one selected from a group consisting of Zr, Sn, Hf, Ce, and Ti, the one selected from the group consisting of Zr, Sn, Hf, Ce, and Ti in the oxide superconducting layer is in a range of 0.01 mass % to 1 mass % with respect to the RE 1 Ba 2 Cu 3 O y , the alkaline earth metal in the oxide superconducting layer is in a range of 0.01 mass % to 0.25 mass % with respect to the RE 1 Ba 2 Cu 3 O y , and an introduction amount of the alkaline earth metal is less than or equal to 40 mol % with respect to an introduction amount of the one selected from the group consisting of Zr, Sn, Hf, Ce, and Ti.