Distorted hysteresis loops and flux creep in YBa2Cu2O7-4 ceramics

M. Lu, Y. T. Zhang, X. Jin, X. N. Xu, H. L. Ji, X. X. Yao, F. S. Liu, H. L. Mou, X. Z. Wu, L. Zhou

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3 引用 (Scopus)

摘要

The relaxation of magnetic moment of high Tc superconductors in an applied field is several orders of magnitude larger than that of conventional ones, so it is worthwhile to discuss the relationship between the hysteresis loops and the magnetic relaxation in high Tc superconductors. Experimentally we used a vibrating sample magnetometer measure the hysteresis loops, and then at different points of this loop, the field sweep was stopped while the external field was maintained constant. The signals of magnetic moment were recorded at 10s and 100s after each stop, forming several distorted hysteresis curves. The dependence of their shapes on the magnetic relaxation, the pinning potential and other parameters in ceramic YBa2Cu2O7-4 samples was discussed.

源语言英语
页(从-至)2151-2152
页数2
期刊Physica C: Superconductivity and its Applications
185-189
PART 4
DOI
出版状态已出版 - 1 12月 1991
已对外发布

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