Hysteretic levitation forces in superconducting ceramics

Moon, F. C.; Yanoviak, M. M.; Ware, R.
May 1988
Applied Physics Letters;5/2/1988, Vol. 52 Issue 18, p1534
Academic Journal
Magnetization forces between small permanent magnets and bulk high Tc superconducting 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. Near-reversible forces are obtained for small motions of the magnet, however, which are believed to be related to flux pinning.


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