Pulsed field magnetization properties for Gd-Ba-Cu-O superconductors impregnated with Bi-Sn-Cd alloy

Y. Kimura, H. Matsumoto, H. Fukai, N. Sakai, I. Hirabayashi, M. Izumi, M. Murakami

研究成果: Article査読

9 被引用数 (Scopus)

抄録

We present a post-fabrication treatment that improves thermal conductivity of bulk Gd-Ba-Cu-O magnets for pulsed field magnetization (PFM). A small hole about 1 mm in diameter was artificially drilled into the center of bulk Gd-Ba-Cu-O 25 mm in diameter and 18 mm in thickness. An aluminum wire was inserted into the hole, and then the sample was subjected to the impregnation by using Bi-Sn-Cd alloy. We employed PFM to magnetize Gd-Ba-Cu-O bulk superconductors with and without the alloy impregnation treatment. The temperatures of the samples were monitored with thermocouples, and local magnetic field density was measured with a Hall sensor. It was found that the alloy impregnation was effective in suppressing the temperature rise by 4 K and in increasing the trapped field by 25% at 44 K. The present results show that the alloy impregnation treatment enhanced the thermal conductivity of bulk Gd-Ba-Cu-O, and thereby improved the field trapping ability.

本文言語English
ページ(範囲)408-411
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
445-448
1-2
DOI
出版ステータスPublished - 2006 10 1

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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