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    題名: Magnetic flux-drag forces for high-Tc superconductors
    其他題名: 高溫超導體之磁阻力
    作者: Chan, W. C.;Chung, C. J.
    貢獻者: 淡江大學物理學系
    日期: 1993-05-15
    上傳時間: 2009-12-31 10:19:00 (UTC+8)
    出版者: College Park; American Institute of Physics (AIP)
    摘要: 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.
    關聯: Journal of Applied Physics 73(10), pp.5095-5097
    DOI: 10.1063/1.353781
    顯示於類別:[物理學系暨研究所] 期刊論文


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