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Magnetic levitation above the superconducting YBa2Cu3O7−x /polymer 0-3 and 2-2 composites

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Abstract

Superconducting YBa2Cu3O7−x /polyurethane 0-3 composites have been fabricated with several volume fraction fillers. Magnetic forces between a small permanent magnet and the composites have been measured at 77 K and show hysteretic behaviour as a function of their separation distances. Such behaviour indicates multiple equilibrium heights of the magnet levitating above the composites. It is shown that the levitation height increases with increasing volume fraction of superconductor filler. The parallel YBa2Cu3O7−x /polyurethane and series YBa2Cu3O7−x /polypropylene 2-2 composites were also prepared and only tested for magnetic levitation.

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Nguyen, H.V., Srinivasan, T.T., Newnham, R.E. et al. Magnetic levitation above the superconducting YBa2Cu3O7−x /polymer 0-3 and 2-2 composites. J Mater Sci: Mater Electron 2, 177–182 (1991). https://doi.org/10.1007/BF00696296

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Keywords

  • Electronic Material
  • Permanent Magnet
  • Magnetic Force
  • Separation Distance
  • Multiple Equilibrium