  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.
