Barium cerate as effective flux pinning centers in Y123 bulk materials

S. Nariki, N. Sakai, M. Murakami, I. Hirabayashi

研究成果査読

11 被引用数 (Scopus)

抄録

Bulk superconductors with compositions of YBa2Cu 3Oy + xBaCeO3 (x = 0.05-0.5) and 0.5 wt.% Pt were fabricated by melt processing in air. BaCeO3 particles of 1-2 μm diameter were dispersed in the Y123 matrix, and critical current density (Jc) increased with the amount of BaCeO3 for the sample with x = 0.05-0.3. We also found that the size of BaCeO3 particles could be reduced by substituting Zr on Ce site. The Y123 bulk sample with 30 mol% of Ba(Ce0.75, Zr0.25)O3 and 0.5 wt.% Pt showed a high Jc value of 110 kA/cm2 at 77 K, where the Ba(Ce, Zr)O3 inclusions were reduced to less than 1 μm in size. However, excess substitution of Zr led to inhomogeneous distribution of the additives and lowered Jc values.

本文言語English
ページ(範囲)602-607
ページ数6
ジャーナルPhysica C: Superconductivity and its applications
426-431
I
DOI
出版ステータスPublished - 2005 10 1
イベントProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
継続期間: 2004 11 232004 11 25

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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