OXIDE SUPERCONDUCTOR AND PRODUCTION METHOD FOR SAME

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An oxide superconducting conductor of the invention is configured to include a substrate; and an oxide superconducting layer formed on the substrate. The oxide superconducting layer is an oxide superconductor being expressed by a composition formula of RE1Ba2Cu3Oy where RE represents a rare earth element and an expression of 6.5 < y < 7.1 is satisfied. The oxide superconducting layer has a different phase including Tb. The different phase is dispersed in the oxide superconducting layer.