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

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

2003-11-20

arxiv.org/abs/cond-mat/0311490v1

Physics

Condensed Matter

Superconductivity

14 pages, 5 figures

Scientific paper

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 from first principles. 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.

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