Pinning properties in melt-processed YbBa2Cu3O7-δ with finely dispersed Yb2BaCuO5 inclusions

Tadashi Mochida, Naomichi Sakai, Sang Im Yoo, Masato Murakami

研究成果: Article査読

8 被引用数 (Scopus)

抄録

We have studied the pinning characteristics of melt-processed Yb-Ba-Cu-O, in which Yb2BaCuO5 (Yb211) particles are dispersed in the YbBa2Cu3O7 (Yb123) matrix. The sample showed a sharp superconducting transition (Tc) with an onset value of 88.5 K. In spite of its low Tc in the RE123 families (RE=rare earth elements), the sample showed a large shielding current density of 5.5 × 108 A/m2 at 77 K and 0 T, which is comparable to those of melt-processed Y-Ba-Cu-O and OCMG-processed Nd-Ba-Cu-O. Analyses reveal that the dominant pinning center of melt-processed Yb-Ba-Cu-O bulk superconductors is Yb211 inclusions.

本文言語English
ページ(範囲)229-237
ページ数9
ジャーナルPhysica C: Superconductivity and its applications
366
4
DOI
出版ステータスPublished - 2002 2月 1
外部発表はい

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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