Superconductivity at 95 K in the new Yb−Ba−Cu oxide system

Koichi Kitazawa,Kohji Kishio,Hidenori Takagi,Tetsuya Hasegawa,Shinsaku Kanbe,Shin-ichi Uchida,Shoji Tanaka,Kazuo Fueki

Superconductivity at 95 K in the new Yb−Ba−Cu oxide system

1987

Koichi Kitazawa
Kohji Kishio
Hidenori Takagi
Tetsuya Hasegawa
Shinsaku Kanbe
Shin-ichi Uchida
Shoji Tanaka
Kazuo Fueki

A reproducible superconducting transition between 83 and 95 K has been observed both resistively and magnetically in the new Yb-Ba-Cu oxide system at ambient pressure. The superconducting phase has been attributed to (Yb1-xBax)3 Cu2O7-δ which has a quite similar structure to that of Sr3Ti2O7 but with a large oxygen deficiency.

Keywords:

Meissner effect
Oxygen
Oxide
Magnetic susceptibility
Superconductivity
Electrical resistivity and conductivity
Analytical chemistry
High-temperature superconductivity
Condensed matter physics
Chemistry
Inorganic chemistry
Inorganic compound
Physics
Ambient pressure

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