Superconductor strip near a magnetic wall of finite thickness

被引:21
作者
Genenko, YA [1 ]
Snezhko, AV
机构
[1] Tech Univ Darmstadt, Inst Mat Wissensch, D-64287 Darmstadt, Germany
[2] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA
关键词
D O I
10.1063/1.1480112
中图分类号
O59 [应用物理学];
学科分类号
摘要
Transport current distributions in a flux-free superconductor strip located near a soft magnet wall of arbitrary thickness were studied numerically for different magnetic permeabilities using the method of surface magnetic charge. It was established that the reduction of the edge current peaks caused by magnetic shielding saturates rapidly with increasing thickness of the magnet. This makes possible the use of thin magnetic films for shielding of superconductor strips with the aim of improving their current-carrying capability so that a small thickness of shields may be compensated by a large magnetic permeability. (C) 2002 American Institute of Physics.
引用
收藏
页码:357 / 360
页数:4
相关论文
共 8 条
[1]   DETERMINATION OF CURRENTS IN FLAT SUPERCONDUCTORS [J].
BRANDT, EH .
PHYSICAL REVIEW B, 1992, 46 (13) :8628-8631
[2]   Large predicted self-field critical current enhancements in superconducting strips using magnetic screens [J].
Genenko, YA ;
Usoskin, A ;
Freyhardt, HC .
PHYSICAL REVIEW LETTERS, 1999, 83 (15) :3045-3048
[3]   Overcritical states of a superconductor strip in a magnetic environment [J].
Genenko, YA ;
Snezhko, A ;
Freyhardt, HC .
PHYSICAL REVIEW B, 2000, 62 (05) :3453-3472
[4]  
Jackson J. D., 1975, CLASSICAL ELECTRODYN
[5]   Magnetic screening as a possible way to decrease transport AC losses in multifilamentary superconductors - basic theoretical considerations [J].
Majoros, M ;
Glowacki, BA ;
Campbell, AM .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2000, 334 (3-4) :129-140
[6]   Transport ac losses and screening properties of Bi-2223 multifilamentary tapes covered with magnetic materials [J].
Majoros, M ;
Glowacki, BA ;
Campbell, AM .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2000, 338 (04) :251-262
[7]  
Press W. H., 1994, Numerical Recipes in FORTRAN, V2nd ed.
[8]   High-transport critical current density above 30 K in pure Fe-clad MgB2 tape [J].
Soltanian, S ;
Wang, XL ;
Kusevic, I ;
Babic, E ;
Li, AH ;
Qin, MJ ;
Horvat, J ;
Liu, HK ;
Collings, EW ;
Lee, E ;
Sumption, MD ;
Dou, SX .
PHYSICA C, 2001, 361 (02) :84-90