| 摘要 |
A three way system for providing controlled levitation or suspension in a magnet-superconductor system, including a current-carrying conductor (such as a coil) for affecting interactions in the magnet-superconductor system, for example by producing a magnetic field intercepting the superconductor, thereby affecting the flux penetration and/or flux pinning properties of the superconductor. By varying the magnitude of the control current the magnitude of the field produced by the coil varies which in turn varies the magnetic interactions in the magnet-coil-superconductor system. This provides a controllable and stable range of levitation, suspension distances, and rotation in the system. Any type II superconductor can be used, but particular advantages are obtained when high Tc superconductors are used. This apparatus has utility and applications such as storage where the enhanced levitation or suspension effects can be used to create a bearing, or for the precise placement of one element with respect to another, as for instance a slider carrying a recording head over a storage medium. |
