High critical current density in Y-Ba-Cu-O bulk superconductors with very fine Y211 particles

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

研究成果: Article

65 引用 (Scopus)

抜粋

We have succeeded in enhancing the critical current density (Jc) of melt-textured Y-Ba-Cu-O superconductors by employing ultra-fine Y211 powder as precursor. The Y211 starting powders were reduced down to 110 nm in diameter with ball-milling. Single-grain Y-Ba-Cu-O samples up to 33 mm in diameter were fabricated from the precursors containing finely milled Y211 powders. The Y211 inclusions in the melt-textured samples could be refined by decreasing the particle size of the Y211 starting powders. The maximum value of Jc at 77 K was 1.1 × 105 A cm-2 in a self-field. However, the size reduction of Y211 led to an inhomogeneous distribution of Y211 particles, in which the volume fraction of the Y211 phase greatly decreased near a seed crystal. An Ag-added bulk sample 33 mm in diameter exhibited a high trapped magnetic field of 1.6 T at 77 K.

元の言語English
ページ(範囲)S30-S35
ジャーナルSuperconductor Science and Technology
17
発行部数2
DOI
出版物ステータスPublished - 2004 2 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

フィンガープリント High critical current density in Y-Ba-Cu-O bulk superconductors with very fine Y211 particles' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用