The crystallization in the welding region for Y-Ba-Cu-O bulk superconductors

J. Yoshioka, K. Iida, N. Sakai, M. Murakami

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

We have studied the effect of crystal orientation on the microstructure at joining regions between two blocks of Y-Ba-Cu-O bulk superconductors using Er-Ba-Cu-O sintering plate. The (1 0 0)/(1 0 0) joint suffered from the segregation of second phase and residual liquid phase, which reduced the critical current. In contrast, the (1 1 0)/(1 1 0) joint was free from the segregation of second phase and residual liquid phase. Microstructural observation showed that many triangular crystals were formed from the back melt zone in the (1 1 0)/(1 1 0) joint. On the other hand, the growth front was parallel to the (1 0 0) surfaces in the (1 0 0)/(1 0 0) joint. Such a difference in the growth morphology was responsible for the difference in the superconducting properties of the joints.

本文言語English
ページ(範囲)495-499
ページ数5
ジャーナルPhysica C: Superconductivity and its applications
386
DOI
出版ステータスPublished - 2003 4月 15
外部発表はい
イベントICMC 2002 - Xi an, China
継続期間: 2002 6月 162002 6月 20

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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