A trapped field of 17.6T in melt-processed, bulk Gd-Ba-Cu-O reinforced with shrink-fit steel

被引：493

作者：

Durrell, J. H. ^{[1
]}

Dennis, A. R. ^{[1
]}

Jaroszynski, J. ^{[2
]}

Ainslie, M. D. ^{[1
]}

Palmer, K. G. B. ^{[1
]}

Shi, Y-H ^{[1
]}

Campbell, A. M. ^{[1
]}

Hull, J. ^{[3
]}

Strasik, M. ^{[3
]}

Hellstrom, E. E. ^{[2
]}

Cardwell, D. A. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

[2] Florida State Univ, Natl High Magnet Field Lab, Ctr Appl Superconduct, Tallahassee, FL 32310 USA

[3] Boeing Co, Seattle, WA USA

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2014年 / 27卷 / 08期

基金：

英国工程与自然科学研究理事会; 美国国家科学基金会;

关键词：

bulk superconductor; high magnetic field; critical current; top-seeded melt growth; MAGNETIC-FIELDS; SUPERCONDUCTORS;

D O I：

10.1088/0953-2048/27/8/082001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The ability of large-grain (RE)Ba2Cu3O7-delta ((RE)BCO; RE = rare earth) bulk superconductors to trap magnetic fields is determined by their critical current. With high trapped fields, however, bulk samples are subject to a relatively large Lorentz force, and their performance is limited primarily by their tensile strength. Consequently, sample reinforcement is the key to performance improvement in these technologically important materials. In this work, we report a trapped field of 17.6 T, the largest reported to date, in a stack of two silver-doped GdBCO superconducting bulk samples, each 25 mm in diameter, fabricated by top-seeded melt growth and reinforced with shrink-fit stainless steel. This sample preparation technique has the advantage of being relatively straightforward and inexpensive to implement, and offers the prospect of easy access to portable, high magnetic fields without any requirement for a sustaining current source.

引用

页数：5

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