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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27542

    Title: Magnetic flux-drag forces for high-Tc superconductors
    Other Titles: 高溫超導體之磁阻力
    Authors: Chan, W. C.;Chung, C. J.
    Contributors: 淡江大學物理學系
    Date: 1993-05-15
    Issue Date: 2009-12-31 10:19:00 (UTC+8)
    Publisher: College Park; American Institute of Physics (AIP)
    Abstract: According to the high‐Tc superconducting bearing experiments, the magnetic flux‐drag torque due to the asymmetric magnetic field distribution of the magnet cannot be neglected. A homemade vertical torsion balance has been constructed to directly measure the flux‐drag torque acting on a yttrium‐barium‐copper‐oxide (YBCO) superconducting sample due to the off‐axis circular motion of a small permanent magnet. It is found that these flux‐drag torques, unlike the levitation forces, have no obvious hysteretic effect. Also, these flux‐drag torques are larger for a melt‐powder‐melt‐growth YBCO superconducting sample than for a ceramic YBCO sample.
    Relation: Journal of Applied Physics 73(10), pp.5095-5097
    DOI: 10.1063/1.353781
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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