Critical current densities in superconducting Y-Ba-Cu-O prepared by the quench-and-melt growth technique

Teruo Matsushita, Baorong Ni, Masato Murakami, Mitsuru Morita, Katsuyoshi Miyamoto, Makoto Saga, Shoichi Matsuda, Mitsuru Tanino

研究成果: Article査読

22 被引用数 (Scopus)

抄録

The critical current characteristic of a Y-Ba-Cu-O specimen prepared by the quench-and-melt growth (QMG) technique was investigated by the ac-inductive method. It was found that there were two kinds of currents. The bulk critical current density is 1.0×108A/m2at 77 K and 0.12 T. This value is comparable to a previous estimate from dc-magnetization measurements. The local current density amounts to 3.2×1010A/m2under the same conditions. Appearance of two kinds of currents seems to be caused by nonsuperconducting second-phase layers formed along the direction of grain growth, which disturb uniform current.

本文言語English
ページ(範囲)L1545-L1548
ジャーナルJapanese Journal of Applied Physics
28
9 A
DOI
出版ステータスPublished - 1989 9 1
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)

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