Oxide superconducting material and process for producing the same
AssigneeNGK Insulators, Ltd.
InventorsHitoshi Sakai, Hitoshi Yoshida, Hideyuki Baba, Manabu Yoshida
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Abstract
A RE-Ba-Cu-O type oxide superconducting material (RE represents Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu or a combination of two or more of them) having a phase structure including a REBa.sub.2 Cu.sub.3 O.sub.y phase and a RE.sub.2 BaCuO.sub.5 phase of 20 .mu.m or less in diameter dispersed in the REBa.sub.2 Cu.sub.3 O.sub.y phase, in which superconducting material RE consists of at least two elements selected from Y, Cl, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu. Said oxide superconducting material can be produced by melt processing.
Claims3
A RE-Ba-Cu-O type oxide superconducting material, comprising:
- a matrix of grains of REBa.sub.2 Cu.sub.3 O.sub.y and, uniformly dispersed therein, fine particles of RE.sub.2 BaCuO.sub.5, wherein RE is at least one element selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu;
- and
- Ce in an amount of 0.1-10% by weight in terms of its oxide (IV) based on said RE-Ba-Cu-O type oxide superconducting material.
Dependencies are inferred from the claim text.