Flux pinning in melt-grown NdBa2Cu3Oy and SmBa2Cu3Oy superconductors

Masato Murakami, Sang Im Yoo, Takamitsu Higuchi, Naomichi Sakai, Jurgen Weltz, Naoki Koshizuka, Shoji Tanaka

研究成果査読

410 被引用数 (Scopus)

抄録

REBa2Cu3Oy superconductors with rare earth (RE) ions with large radii (RE: La, Nd, Sm) exhibit relatively low Tc due to the presence of RE-Ba solid solution. We have found that this solid solution can be suppressed if these superconductors are melt processed in a reduced oxygen atmosphere. We have also found that critical current densities of these superconductors are higher than those of melt processed YBa2Cu3Oy with fine Y2BaCuO5 inclusions in a high field region. The irreversibility line was also shifted toward the higher H-T region. We believe that flux pinning in these superconductors is ascribable to a finely distributed RE(Ba1–x, REx)2Cu3Oy phase in a good superconductive matrix.

本文言語English
ページ(範囲)L715-L717
ジャーナルJapanese Journal of Applied Physics
33
5
DOI
出版ステータスPublished - 1994 5
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

フィンガープリント

「Flux pinning in melt-grown NdBa<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub> and SmBa<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub> superconductors」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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