Magnetization forces between small permanent magnets and bulk highTcsuperconducting ceramic materials have been measured and show marked hysteretic behavior as a function of the distance between the magnet and superconductor. Magnetic forces of up to 2500 dyn, both normal and tangential to the superconductor surface, have been made. Nearhyphen;reversible forces are obtained for small motions of the magnet, however, which are believed to be related to flux pinning.
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