Extended Rate Equation for Flux Motion in High-Tc 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
Extended Rate Equation for Flux Motion in High-Tc 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
Abstract： The rate equation for flux motion in high- Tc 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- Tc superconductors. The agreement of the effective activation energy Ueff (J) extracted from the time relaxation and that from magnetic hysteresis loops measurements on a melt-textured YBa2Cu3O6+x sample supports this extended rate equation for flux motion in high temperature superconductors.
JI Helin;QIN Mengjun;JIN Xin;YAO Xixian;FU Yaoxian. Extended Rate Equation for Flux Motion in High-Tc Superconductors[J]. 中国物理快报, 1994, 11(6): 369-372.
JI Helin, QIN Mengjun, JIN Xin, YAO Xixian, FU Yaoxian. Extended Rate Equation for Flux Motion in High-Tc Superconductors. Chin. Phys. Lett., 1994, 11(6): 369-372.
1994, Vol. 11 
