The Furukawa Electric Co., Ltd.

International Superconductivity Technology Center

Tohoku Electric Power Company, Inc.

Kyocera Corporation

Central Research Institute of Electric Power Industry

Kazuhiro Sakuyama

Shoji Tanaka

Toshihiko Maeda

Shin-ichi Koriyama

Hisao Yamauchi

Ataru Ichinose

A method for manufacturing a Pb-based Cu oxide superconductor. The method includes the steps of mixing powders of a raw material containing at least Pb, Sr, Ce, M, where M is at least one element selected from the group consisting of Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, and Lu, and Cu in a proportion to have the composition of the formula (I),

Method of manufacturing an oxide superconductor

An oxide superconductor which has a composition expressed by the following general formula and whose crystal structure is 1222-phase structure.

Oxide superconductor having the formula Pb.sub.a (M.sub.1-x-y Ce.sub.x

A superconducting material is disclosed which includes oxides of metals having the following composition:

Superconducting material of metal oxides

Growing community of inventors

Ichikawa, Japan

Kazuhiro Sakuyama