Effect of metal ring setting outside HTSC bulk disk on trapped field and temperature rise in pulse field magnetizing

Hiroyuki Fujishiro, Kazuya Yokoyama, Masahiko Kaneyama, Tetsuo Oka, Koshichi Noto

Research output: Contribution to journalArticle

13 Citations (Scopus)


In order to enhance the trapped field in cryo-cooled HTSC bulks using pulse field magnetizing (PFM), a metal ring (stainless steel 304 and/or Al) has been tightly set onto the SmBaCuO bulk disk and the relation between the total trapped flux Φ TP, the trapped field B T P, and the temperature rise ΔT, has been investigated as a function of the applied pulse field B ex. The Φ T P and B T P values are enhanced about 10-20% by the metal ring due to the reduction in the temperature rise AT. These results suggest that a part of the generated heat Q due to the flux motion in the peripheral region promptly transfers to the metal ring and the heat transfer to the cold stage is improved by the ring setting.

Original languageEnglish
Pages (from-to)3762-3765
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 PART III
Publication statusPublished - 2005 Jun 1
Externally publishedYes



  • High T bulk superconductors
  • Metal ring setting
  • Pinning and viscous loss
  • Pulse field magnetizing
  • Temperature measurement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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