The Furukawa Electric Co., Ltd.

The Tokyo Electric Power Company, Incorporated

Masanao Mimura

Shoji Shiga

Hideo Ishii

Shoichi Honjo

Yasuzo Tanaka

Masanori Ozaki

Naoki Uno

Masahiro Sugimoto

Yoshihiro Iwata

Hiroyuki Kikuchi

Nakahiro Harada

Ton-Chi Chang

Akio Kimura

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.

AC oxide superconductor wire and cable

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.

Multifilamentary oxide superconducting wires and method of manufacturing

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.

Laminated layers of a substrate, noble metal, and interlayer underneath

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Yokohama, Japan

Masanao Mimura