Trapped Field over 4 Tesla on GdBaCuO Bulk by Pulse Field Method and Magnetizing Mechanism

被引：9

作者：

Fujishiro, Hiroyuki ^{[1
]}

Kaneyama, Masahiko ^{[1
]}

Tateiwa, Tatsuya ^{[1
]}

Oka, Tetsuo ^{[2
]}

机构：

[1] Iwate Univ, Fac Engn, 4-3-5 Ueda, Morioka, Iwate 0208551, Japan

[2] IMRA Mat R&D Co Ltd, Kariya, Aichi 4480021, Japan

来源：

7TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS'05) | 2006年 / 43卷

关键词：

D O I：

10.1088/1742-6596/43/1/101

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a new pulse field magnetizing (PFM) method using the modified multi pulse technique combined with a stepwise cooling (MMPSC) to obtain the trapped field B-T(P) over 4 T on a bulk superconductor. The B-T(P) value as high as 4.47 T has been attained on the surface of the GdBaCuO bulk, which is the present highest using PFM. The key points to obtain the higher B-T(P) are the introduction of a small amount magnetic flux (B-T(P)similar to 1 T) into the bulk with the "M-shaped" trapped field distribution at a higher starting temperature T-s similar to 45 K, and the following application of the optimum stronger pulse fields of B-ex similar to 6.7 T at a lower T-s similar to 30 K. The reduction in the temperature rise Delta T due to the already existing trapped flux is a very important issue.

引用

页码：405 / 408

页数：4

共 6 条

[1]

Effect of metal ring setting outside HTSC bulk disk on trapped field and temperature rise in pulse field magnetizing [J].