Levitation force between a highly magnetized superconducting bulk magnet (SBM) and a permanent magnet (PM) was numerically calculated considering the non-linear J-E relation of a SBM and the demagnetization of a PM. The variation of levitation force was found according to operating temperatures, maximum trapped flux densities, and gap distances between a SBM and a PM. Saturation of the levitation force was found.
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