Abstract: Disclosed is an AC oxide superconductor round wire including a metal matrix, and a plurality of superconductor filaments embedded in the metal matrix, wherein the superconductor filaments are twisted at a twist pitch L.sub.p satisfying the following relation.2L.sub.c1 <L.sub.p .ltoreq.2L.sub.c2L.sub.c1 =2{(2.rho..multidot.d.sub.f .multidot.J.sub.c)/(.mu..sub.o .multidot.dH/dt)}.sup.1/2L.sub.c2 =2{(2.rho..multidot.d.sub.b .multidot.J.sub.cb)/(.mu..sub.o .multidot.dH/dt)}.sup.

Abstract: A multifilamentary oxide superconducting wire includes a metal matrix and a plurality of flat oxide superconductor filaments arranged in the metal matrix such that wide directions thereof are radially arranged in a section of the metal matrix. A method of manufacturing a multifilamentary oxide superconducting wire includes the steps of filling a raw material of an oxide superconductor in a through hole of a metal member to form a composite billet, subjecting the composite billet to a diameter reduction process to form a composite wire having a fan-like section, arranging composite wires so that larger arcs of the composite wires are located on the outer side, thus forming form a composite wire arrangement, covering the composite wire arrangement with a metal member to form a metal-covered composite wire arrangement, and performing a predetermined heating process of the metal-covered composite wire arrangement, thus forming the raw material into an oxide superconductor.

Abstract: This invention discloses an oxide superconductor shaped body including a noble metal layer formed on at least one surface of an oxide superconductor layer formed on a substrate, and a method of manufacturing oxide superconductor shaped body.