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    題名: Levitation force relaxation in YBCO superconductors
    作者: Tseng,Y. S.;Chiang, C. H.;陳偉正;Chan, W. C.
    貢獻者: 淡江大學物理學系
    關鍵詞: Magnetization;Levitation force;Relaxation
    日期: 2004-09
    上傳時間: 2009-12-31 10:40:47 (UTC+8)
    出版者: Elsevier
    摘要: A modified helium gas closed cycle cryogenic system has been used to measure the zero field cooling levitation force relaxation as a function of temperature (40–85 K) for three different sizes of YBCO superconducting sample. The time range in our relaxation measurements was from 3 s to 1000 s. A linear logarithmic decay of the levitation forces with time was observed. It was found that the levitation force might decrease more than forty percent in our measured interval. It was also found that the higher temperature and the smaller size the superconductor we have, the faster the levitation force it decays, as one would expected.
    關聯: Physica C: superconductivity 411(1-2), pp.32-34
    DOI: 10.1016/j.physc.2004.06.001
    顯示於類別:[物理學系暨研究所] 期刊論文


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