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非理想第二类超导体磁通蠕动的计算模拟研究
SIMULATIONS ON LOCAL FLUX CREEP IN TYPE II SUPERCONDUCTORS
【摘要】 本文用C语言模拟了非理想第二类超导体内的磁通蠕动过程.通过数值计算,给出了样品局部的磁滞回线及恒定外场下的blogt曲线,指出局部磁滞回线对外场变化速度的依赖,还探讨了非均匀钉扎势和自组织临界态模型对磁通蠕动模拟结果的影响
【Abstract】 Abstract Using C programming language, we simulate the flux creep process in nonideal type II superconductors. Local magnetization curves are calculated and the logrithmic time dependence of local magnetic induction B under constant external field is examined. The results show that the form of hysteresis loops is dependent on the magnetic field sweep rate. Further, we discuss the effects of nonuniform pinning potential and SOC model on the flux creep process.
【基金】 国家超导研究与发展中心资助项目
- 【文献出处】 低温物理学报 ,CHINESE JOURNAL OF LOW TEMPERATURE PHYSICS , 编辑部邮箱 ,1999年04期
- 【分类号】O511
- 【被引频次】2
- 【下载频次】99