The Furukawa Electric Co., Ltd.

International Superconductivity Technology Center

Tohoku Electric Power

Tadashi Tatsuki

Hisao Yamauchi

Seiji Adachi

Makoto Itoh

Toshiyuki Tamura

Xiao-Jing Wu

Changqin Jin

The present invention is an oxide superconductor containing alkaline earth metal M (where M is at least one element of Ba, Sr, and Ca) and having a crystalline structure in which a portion based on two rock-salt structures including the alkaline earth metal M, oxygen, and chlorine, and a 2n-1 piece of infinite layer structure portion are alternately layered on each other, said 2n-1 piece of infinite layer structure portion having an atom layer including copper atoms and oxygen atoms in a ratio of 1 to 2 and of an atom layer including only M atoms layered on each other (where n is an integer of 1 or more and where copper atoms and oxygen atom are contained in a ratio of 1 to 2 if n is 1).

Rock-salt/infinite layer chlorine-containing oxide superconductor and

Growing community of inventors

Tokyo, Japan

Tadashi Tatsuki