Trapped field over 4 tesla on GdBaCuO bulk by pulse field method and magnetizing mechanism

Hiroyuki Fujishiro, Masahiko Kaneyama, Tatsuya Tateiwa, Tetsuo Oka

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We report a new pulse field magnetizing (PFM) method using the modified multi pulse technique combined with a stepwise cooling (MMPSC) to obtain the trapped field BTP over 4 T on a bulk superconductor. The BTP value as high as 4.47 T has been attained on the surface of the GdBaCuO bulk, which is the present highest using PFM. The key points to obtain the higher BTP are the introduction of a small amount magnetic flux (BTP∼1 T) into the bulk with the M-shaped trapped field distribution at a higher starting temperature Ts∼45 K, and the following application of the optimum stronger pulse fields of Bex∼6.7 T at a lower Ts∼30 K. The reduction in the temperature rise ΔT due to the already existing trapped flux is a very important issue.

Original languageEnglish
Article number101
Pages (from-to)405-408
Number of pages4
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2006 Jun 1


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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