Influence of the size of Gd211 starting powder on the critical current density of Gd-Ba-Cu-O bulk superconductor

S. Nariki, S. J. Seo, N. Sakai, M. Murakami

研究成果: Conference article査読

91 被引用数 (Scopus)

抄録

The relationship between the particle size of Gd211 powder in the precursor and the particle size of Gd211 inclusions in Gd-Ba-Cu-O bulk has been investigated. Gd211 starting powders with various diameters were prepared by the calcination of Gd2O3, BaO2 and CuO powders at different temperatures between 800 and 1000°C. The particle size of Gd211 in the melt-grown bulk was proportional to the particle size of the initial Gd211 powder. In conclusion, the employment of fine Gd211 powder led to a size reduction of 211 particles in the bulk, while largely enhancing the Jc values in low magnetic fields. A large Gd-Ba-Cu-O/Ag bulk sample, 32 mm in diameter, could also be fabricated by the hot-seeding method. The maximum trapped field value revealed 1.5 T at 77 K.

本文言語English
ページ(範囲)778-784
ページ数7
ジャーナルSuperconductor Science and Technology
13
6
DOI
出版ステータスPublished - 2000 6 1
外部発表はい
イベントThe 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn
継続期間: 1999 10 191999 10 22

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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