Extended Rate-Equation For Flux Motion In High-Tc Superconductors
CHINESE PHYSICS LETTERS(1994)
摘要
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 YBa2Cu3O6+x sample supports this extended rate equation for flux motion in high temperature superconductors.
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关键词
activation energy,magnetic hysteresis,rate equation,high temperature superconductor
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