RE123-BASED SUPERCONDUCTING WIRE AND METHOD OF MANUFACTURING THE SAME

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An RE123-based superconducting wire includes a base material, an intermediate layer formed on the base material, and an oxide superconducting layer which is formed on the intermediate layer and includes an oxide superconductor having a composition formula represented by RE1Ba2Cu3O7−δ (RE represents one or two or more rare earth elements), in which the oxide superconducting layer includes 0.5 to 10 mol % of a Hf-including compound dispersed in the oxide superconducting layer as an artificial pinning center, a film thickness d of the oxide superconducting layer is d>1 μm, and a current characteristic of Jcd/Jc1≧0.9 (Jc1 represents a critical current density when the thickness of the oxide superconducting layer is 1 μm, and Jcd represents the critical current density when the thickness of the oxide superconducting layer is d μm) is satisfied.