Critical transport current density in sintered oxide superconductors with high critical temperature

Teruo Matsushita, Baorong Ni, Yasuo Sudo, Masataka Iwakuma, Kazuo Funaki, Masakatsu Takeo, Kaoru Yamafuji

研究成果: Contribution to journalArticle査読

23 被引用数 (Scopus)

抄録

Percolative critical transport current density in sintered Y–Ba–Cu–O superconductors is estimated by taking into account the effect of anisotropies in the upper critical field and the pinning structure. This value is much smaller than the estimate for the optimized situation, where misorientation between the magnetic field and anisotropic pinning structures does not occurs. As the volume fraction of the superconducting region becomes small, the critical transport current density decreases drastically due to a decrease in the percolation probability of the current. To improve the transport property, it is necessary to align the orientation of grains or to introduce isotropic pinning centers, in addition to increasing the superconducting volume fraction.

本文言語英語
ページ(範囲)929-936
ページ数8
ジャーナルJapanese journal of applied physics
27
6R
DOI
出版ステータス出版済み - 6 1988

All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(全般)

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