Effect of pinning on the flux motion of Gd-Ba-Cu-O bulk superconductors

K. Yoshizawa, S. Nariki, M. Murakami, T. Takizawa

研究成果: Conference article査読

1 被引用数 (Scopus)


We have observed the flux motion using Hall probe sensors that are placed on the surface of high quality Y-Ba-Cu-O and Gd-Ba-Cu-O disks 15 mm in diameter with 0.95 mm thickness with applying pulsed magnetic field. The peak value of the field was varied from 0.1 to 0.8 T. The effects of static bias fields was also studied in the field range of 0-3 T at 77 K. Gd-Ba-Cu-O shows the clear secondary peak effect on the Jc-B curve so that the pinning property was different from Y-Ba-Cu-O for which Jc monotonically decreases with field. The flux motion was enhanced in Y-Ba-Cu-O with increasing static bias field, while that was suppressed in Gd-Ba-Cu-O, reflecting the secondary peak effect.

ジャーナルPhysica C: Superconductivity and its applications
出版ステータスPublished - 2003 10 1
イベントProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
継続期間: 2002 11 112002 11 13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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