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

C Y He; Y Hou; L Liu; Z X Gao

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arXiv · cond-mat/0311490

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

C Y He·Y Hou·L Liu·Z X Gao

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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 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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C Y He, Y Hou, L Liu, Z X Gao. 2003-11-20. Trapped field and related properties in a superconducting disk magnetized by pulse field. https://arxiv.org/abs/cond-mat/0311490

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