Recent development in superconducting permanent magnets

Uichiro Mizutani; Tetsuo Oka; Yoshitaka Itoh; Hiroshi Ikuta

doi:10.2497/jjspm.46.1241

Recent development in superconducting permanent magnets

Uichiro Mizutani, Tetsuo Oka, Yoshitaka Itoh, Hiroshi Ikuta

Research output: Contribution to journal › Article › peer-review

Abstract

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 J_c 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.

Original language	English
Pages (from-to)	1241-1248
Number of pages	8
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	46
Issue number	12
DOIs	https://doi.org/10.2497/jjspm.46.1241
Publication status	Published - 1999 Dec
Externally published	Yes

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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10.2497/jjspm.46.1241

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AU - Itoh, Yoshitaka

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Recent development in superconducting permanent magnets

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