Magnetizing of permanent magnets using HTS bulk magnets

Tetsuo Oka, Tomoki Muraya, Nobutaka Kawasaki, Satoshi Fukui, Jun Ogawa, Takao Sato, Toshihisa Terasawa

研究成果: Article

2 引用 (Scopus)

抄録

A demagnetized Nd-Fe-B permanent magnet was scanned just above the magnetic pole which contains the HTS bulk magnet generating a magnetic field of 3.27 T. The magnet sample was subsequently found to be fully magnetized in the open space of the static magnetic fields. We examined the magnetic field distributions when the magnetic poles were scanned twice to activate the magnet plate inversely with various overlap distances between the tracks of the bulk magnet. The magnetic field of the "rewritten" magnet reached the values of the magnetically saturated region of the material, showing steep gradients at the border of each magnetic pole. As a replacement for conventional pulse field magnetizing methods, this technique is proposed to expand the degree of freedom in the design of electromagnetic devices, and is proposed as a novel practical method for magnetizing rare-earth magnets, which have excellent magnetic performance and require intense fields of more than 3 T to be activated.

元の言語English
ページ(範囲)27-31
ページ数5
ジャーナルCryogenics
52
発行部数1
DOI
出版物ステータスPublished - 2012 1 1
外部発表Yes

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permanent magnets
Permanent magnets
Magnets
magnets
magnetic poles
Magnetic fields
Poles
magnetic fields
borders
Rare earths
rare earth elements
degrees of freedom
electromagnetism
gradients
pulses

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

これを引用

Oka, T., Muraya, T., Kawasaki, N., Fukui, S., Ogawa, J., Sato, T., & Terasawa, T. (2012). Magnetizing of permanent magnets using HTS bulk magnets. Cryogenics, 52(1), 27-31. https://doi.org/10.1016/j.cryogenics.2011.10.005

Magnetizing of permanent magnets using HTS bulk magnets. / Oka, Tetsuo; Muraya, Tomoki; Kawasaki, Nobutaka; Fukui, Satoshi; Ogawa, Jun; Sato, Takao; Terasawa, Toshihisa.

:: Cryogenics, 巻 52, 番号 1, 01.01.2012, p. 27-31.

研究成果: Article

Oka, T, Muraya, T, Kawasaki, N, Fukui, S, Ogawa, J, Sato, T & Terasawa, T 2012, 'Magnetizing of permanent magnets using HTS bulk magnets', Cryogenics, 巻. 52, 番号 1, pp. 27-31. https://doi.org/10.1016/j.cryogenics.2011.10.005
Oka T, Muraya T, Kawasaki N, Fukui S, Ogawa J, Sato T その他. Magnetizing of permanent magnets using HTS bulk magnets. Cryogenics. 2012 1 1;52(1):27-31. https://doi.org/10.1016/j.cryogenics.2011.10.005
Oka, Tetsuo ; Muraya, Tomoki ; Kawasaki, Nobutaka ; Fukui, Satoshi ; Ogawa, Jun ; Sato, Takao ; Terasawa, Toshihisa. / Magnetizing of permanent magnets using HTS bulk magnets. :: Cryogenics. 2012 ; 巻 52, 番号 1. pp. 27-31.
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