淡江大學機構典藏:Item 987654321/28052
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    題名: Magnetic levitation of ceramic YBCO superconducting sample
    其他題名: YBCO超導樣品磁浮力測量
    作者: 陳偉正;Chan, W. C.;Jwo, D. S.;Lee, J. J.
    貢獻者: 淡江大學物理學系
    日期: 1996-04
    上傳時間: 2009-12-31 11:00:47 (UTC+8)
    出版者: 中華民國物理學會
    摘要: Based on the Bean's critical state model and Meissner effect, we can explain the magnetic levitation forces acting on a YBCO superconducting single crystal quite well. However, this calculation can only be applied to the case of small superconductor placing in an uniform magnetic field. By measuring the magnetic levitation forces acting on two types of YBCO superconducting samples: one ceramic-YBCO, and the other one epoxy-YBCO with different weighting ratio of YBCO, we found that the intergranular supercurrent flowing inside the ceramic sample make negligible contribution to the levitation forces. Considering the ceramic-YBCO sample as an ensemble of many isolated small superconducting grains, we obtained good theoretical results for the magnetic leviation force acting on a permanent magnet in comparision with experimental measurements.
    關聯: Chinese Journal of Physics=中國物理學刊 34(2-II)，頁489-492
    顯示於類別:[物理學系暨研究所] 期刊論文

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