Extended Rate Equation for Flux Motion in High-T<suB>c</suB> Superconductors

Chin. Phys. Lett.

1994, Vol. 11

Issue (6): 369-372 DOI:

Original Articles

Extended Rate Equation for Flux Motion in High-T_c Superconductors

JI Helin¹;QIN Mengjun;JIN Xin;YAO Xixian;FU Yaoxian²

Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008 ¹also National Laboratory for Superconductivity, Institute of Physics, Academia Sinica, Beijing 100080 ²Shanghai Institute of Metallurgy, Academia Sinica, Shanghai 200050

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JI Helin, QIN Mengjun, JIN Xin et al 1994 Chin. Phys. Lett. 11 369-372

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Abstract The rate equation for flux motion in high- T_c superconductors is extended to take the contribution of field sweep into account in this work. It is shown that the time and field sweep rate (H) dependence of magnetization are equivalent approaches to the study of flux creep properties in high- T_c superconductors. The agreement of the effective activation energy U_eff (J) extracted from the time relaxation and that from magnetic hysteresis loops measurements on a melt-textured YBa₂Cu₃O_6+x sample supports this extended rate equation for flux motion in high temperature superconductors.

Keywords: 74.60.Ge 74.60.Mj

Published: 01 June 1994

PACS:	74.60.Ge
	74.60.Mj

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1994/V11/I6/0369

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