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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27726


    Title: Bean's model and magnetic flux-drag torques for high-Tc superconductors
    Authors: Chan, W. C.;Jwo, D. S.;Lee, J. J.
    Contributors: 淡江大學物理學系
    Date: 1995-10
    Issue Date: 2013-07-09 15:10:11 (UTC+8)
    Publisher: Amsterdam: Elsevier BV * North-Holland
    Abstract: The magnetic flux-drag torque between a small permanent magnet with off-axis circular motion and an epoxy-high-Tcsuperconducting sample with different weighting ratio were measured by a homemade vertical torsion balance. It was found that the magnetic flux-drag torques scaled to a good approximation with the mass of the superconductor inside the superconducting sample. A simple model with the Bean's critical state approximation is then introduced to explain the functional dependence of the magnetic flux-drag torque against the distance between the rotating magnet and the epoxy-superconductor sample. Results of calculation agree with experimental measurements quite closely.
    Relation: Physica C: Superconductivity and its Applications 252(1-2), pp.203-207
    DOI: 10.1016/0921-4534(95)00435-1
    Appears in Collections:[物理學系暨研究所] 期刊論文

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