Magnetic flux invasion in REBCO bulk magnets with varying pre-magnetized flux distributions in multiple-PFM processes

Tetsuo Oka, K. Hara, A. Takeda, J. Ogawa, S. Fukui, T. Sato, K. Yokoyama, A. Murakami

研究成果: Conference article

1 引用 (Scopus)

抜粋

The motion of magnetic flux invading into the HTS bulk magnets were experimentally studied in their pulsed field magnetization processes. The authors paid attention to the effects of the shapes of the pre-magnetized trapped flux distributions before the successive field applications by means of varying the M-shaped distribution. We estimated the differences of the magnetic flux motions between the Dy123 and Gd123 systems, which might have different Jc properties of each sample. As for the Dy123 system, the increase of remaining flux in the periphery region of the M-shaped distribution resulted in the decrease of flux-trapping according to the promotion of flux invasion. On the other hand, trapped flux density has been raised to 3.4 T owing to the effective suppression of flux invasion for the Gd123 bulk magnet. The experiments showed that the peak heights and the positions of the formerly trapped M-shaped fluxes precisely affect the heat generation and the trapped field performance.

元の言語English
記事番号012049
ジャーナルJournal of Physics: Conference Series
871
発行部数1
DOI
出版物ステータスPublished - 2017 7 26
外部発表Yes
イベント29th International Symposium on Superconductivity, ISS 2016 - Tokyo, Japan
継続期間: 2016 12 132016 12 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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