Title :
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
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2004.837113
