摘要
When the applied field Ba=μ0 H_(a)(H_(a)>H_(p))is perpendicular to the surface of a disk-shaped superconducting thin film with the full penetrated field H_(p),the radius R,and the thickness d,a quantitative relation between the average fieldand the magnetization M is described by=μ_(0)[H_(a)+(0.81 d/R)M]for R»d,where the termμ0(0.81 d/R)M also is the average self-field of the film.Combining this relation with the magnetic flux conservation equation and the Arrhenius relation,the effective activation energy is extracted from the experimental magnetization relaxation and the dynamic magnetization relaxation,respectively.
作者
XU Xiao-nong
SUN Ai-min
DING Shi-ying
JIN Xin
YAO Xi-xian
YAN Shao-lin
WEN Hai-hu
徐小农;孙爱民;丁世英;金新;姚希贤;阎少林;闻海虎(Department of Physics and Center of Advanced Studies in Science and Technology of Microstructures,Nanjing University,Nanjing 210093;Department of Electronics,Nankai University,Tianjin 300071;National Laboratory for Superconductivity,Institute of Physics,Chinese Academy of Sciences,Beijing 100080)
基金
Supported by the National Foundation for Doctoral Education
the National Center for Research and Development on Superconductivity of China.
