Barium cerate as effective flux pinning centers in Y123 bulk materials

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

研究成果: Conference article査読

11 被引用数 (Scopus)


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.

ジャーナルPhysica C: Superconductivity and its applications
出版ステータスPublished - 2005 10月 1
イベントProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
継続期間: 2004 11月 232004 11月 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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