Trapped field and related properties in a superconducting-disk magnetized by pulse field

Author

He, Chunyong ; Hou, Yang ; Liu, Liang ; Gao, Zhengxiang

Author_Institution

Dept. of Phys., Peking Univ., Beijing, China

Volume

14

Issue

4

fYear

2004

Firstpage

2025

Lastpage

2030

Abstract

The distributions of the magnetic field and temperature in a superconducting-disk magnetized by pulse field, and the levitation force between this disk and a permanent magnet are calculated. The calculation is based upon the current motion and the heat diffusion equations in the disk. The critical current density as a function of magnetic field and temperature is taken into account. The dissipation power in the superconducting or the normal state region is distinguished. The trapped field may reach 17 T at 29 K by pulsed field magnetization. The effects of the amplitude of the current pulse on the distributions of magnetic field in the disk and on the levitation force are discussed.

Keywords

critical current density (superconductivity); magnetic fields; magnetic levitation; superconducting devices; temperature distribution; critical current density; current motion; dissipation power; heat diffusion; levitation force; magnetic field distribution; pulse field magnetization; superconducting disk; trapped field; Current density; High temperature superconductors; Magnetic fields; Magnetic levitation; Magnetic properties; Magnetization; Magnetostatics; Superconducting coils; Superconducting magnets; Temperature distribution; 65; Current motion; heat diffusion; levitation force; pulsed field magnetization; trapped field;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.837113

Filename

1362679