TY - JOUR
T1 - Construction of a strong magnetic field generator with use of melt-processed bulk superconductors
AU - Oka, T.
AU - Yokoyama, K.
AU - Itoh, Y.
AU - Ikuta, H.
AU - Mizutani, U.
AU - Okada, H.
AU - Katagiri, K.
AU - Noto, K.
N1 - Funding Information:
Manuscript received August 6, 2002. This work was supported in part by the Grant-in-Aid from METI and JST Japan. T. Oka, K. Yokoyama, and H. Okada are with the Iwate Industrial Promotion Center, Morioka, Iwate 020-0852, Japan (e-mail: toka@iwate-techno.com). Y. Itoh is with IMRA Material R&D Company, Ltd., Kariya, Aichi 448-0021, Japan. H. Ikuta and U. Mizutani are with Nagoya University, Furocho, Nagoya 464-8603, Japan. K. Katagiri and K. Noto are with Iwate University, Morioka 020-8551, Japan. Digital Object Identifier 10.1109/TASC.2003.812796 Fig. 1. Photograph of the polished surface of the Sm123 melt-processed bulk sample reinforced by a stainless steel ring.
PY - 2003/6
Y1 - 2003/6
N2 - A superconducting permanent magnet system capable of generating strong magnetic fields has been constructed by using melt-processed bulk superconductors as trapped field magnets. The trapped field in the open space between two magnetic poles that are set face to face has reached 3.15 T when magnetized by a pulsed-fleld magnetization (PFM) technique. That was operated at 30 K attained by GM-cycle refrigerators. The performance exceeds that of conventional rare earth magnets or large scale electromagnets by far. It was found that the iteratively magnetizing pulsed field operation with reducing amplitude (IMRA) method is very effective in magnetizing the bulk superconductors. The magnet system can be used as a high field generator in various applications.
AB - A superconducting permanent magnet system capable of generating strong magnetic fields has been constructed by using melt-processed bulk superconductors as trapped field magnets. The trapped field in the open space between two magnetic poles that are set face to face has reached 3.15 T when magnetized by a pulsed-fleld magnetization (PFM) technique. That was operated at 30 K attained by GM-cycle refrigerators. The performance exceeds that of conventional rare earth magnets or large scale electromagnets by far. It was found that the iteratively magnetizing pulsed field operation with reducing amplitude (IMRA) method is very effective in magnetizing the bulk superconductors. The magnet system can be used as a high field generator in various applications.
KW - Bulk superconductors
KW - Field generator
KW - Pulsed field magnetization
KW - Trapped field magnet
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U2 - 10.1109/TASC.2003.812796
DO - 10.1109/TASC.2003.812796
M3 - Conference article
AN - SCOPUS:0041973610
VL - 13
SP - 1584
EP - 1587
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 2 II
T2 - 2002 Applied Superconductivity Conference
Y2 - 4 August 2002 through 9 August 2002
ER -