Recent development in superconducting permanent magnets

Uichiro Mizutani, Tetsuo Oka, Yoshitaka Itoh, Hiroshi Ikuta

研究成果: Article


The c-axis oriented single-domain Sm123 bulk superconductors have been synthesized in the melt-texturing process. The maximum trapped flux density has reached 1.7 T at 77 K and 9.0 T at 25 K at the center of sample surface. Detailed analysis on the flux motion through the pulsed field magnetization (PFM) process revealed that the iteratively magnetizing pulsed field operation with reducing amplitude (IMRA method) is very effective in magnetizing high Jc bulk superconductors at temperatures near 30 K, attained by a cryocooler and vacuum pumps. A compact superconducting permanent magnet system driven by the PFM technique has been constructed, which is capable of generating magnetic fields up to 2 T in the open space outside the magnetic pole.

ジャーナルFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
出版物ステータスPublished - 1999 12

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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