(Ba, Ca)x (α, Dy)1-x Tly Cu1-Y O3-z where α is Y or La oxide high temperature superconducting material

Abstract

Abstract A superconducting material and a process for producing a superconducting material comprising a compound oxide represented by the general formula: (Ba, γ).sub.x (α,β).sub.1-x ε.sub.y Cu.sub.1-y O 3-z in which "γ" represents an element of the IIa group of the periodic table except Ba, an atomic ratio of γ to Ba, being selected in a range between 1% and 90%, "α" represents Y or La, "β" represents an element of the IIIa group of the periodic table but is different from α, and atomic ratio of β to α being selected in a range between 1 and 90%, "ε" represents a metal element of the IIIb group of the periodic table, x, y and z are numbers each satisfies ranges of 0≦x≦1, 0≦y≦1, and 0≦z≦1 respectively, and the expression of (Ba, γ) and (α, β) mean that the respective elements occupy predetermined sites in a crystal in a predetermined proportion.

Inventors

• 👤 Hideo Itozaki
• 👤 Saburo Tanaka
• 👤 Nobuhiko Fujita
• 👤 Shuji Yazu
• 👤 Tetsuji Jodai

Bibliographic Details