Magnetic Field Distribution of Permanent Magnet Magnetized by Static Magnetic Field Generated by HTS Bulk Magnet

被引：6

作者：

Oka, Tetsuo ^{[1
]}

Kawasaki, Nobutaka ^{[1
]}

Fukui, Satoshi ^{[1
]}

Ogawa, Jun ^{[1
]}

Sato, Takao ^{[1
]}

Terasawa, Toshihisa ^{[2
]}

Itoh, Yoshitaka ^{[2
]}

Yabuno, Ryohei ^{[2
]}

机构：

[1] Niigata Univ, Nishi Ku, Niigata 9502181, Japan

[2] IMRA MAT R&D CO, Kariya, Aichi 4480032, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2012年 / 22卷 / 03期

关键词：

Bulk superconductor; magnetic field; permanent magnet; refrigerator; trapped field; SUPERCONDUCTORS; TESLA;

D O I：

10.1109/TASC.2011.2179510

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Demagnetized rare earth magnets (Nd-Fe-B) can be fully magnetized by scanning them in the intense static fields over 3 T of a HTS bulk magnet which was cooled to the temperature range lower than 77K with use of cryo-coolers and activated by the field of 5 T. We precisely examined the magnetic field distributions of magnetized permanent magnets. The magnetic poles were 'in the narrow space on the surface of the permanent magnet with varying gap distances between the tracks of the HTS magnetic pole. Steep magnetic transitions between N and S were observed in the magnetic field distribution maps after the HTS magnetic poles were alternatively scanned for several times. The magnetizing method has been proposed for designing novel electromagnetic devices including magnetically excellent rare earth magnets which require intense magnetic fields over 3 T.

引用

页数：4

共 11 条

[1]

Krabbes G., 2006, HIGH TEMPERATURE SUP, P188

[2] Applications of superconducting permanent magnets driven by static and pulsed fields [J].