磁屏蔽超导细丝中critical state的Bean模型
The Bean model of the critical state in a magnetically shielded superconductor filament
摘要：
本文研究了在横向磁场作用下，圆柱形Ⅱ型超导细丝外包覆一层同轴软磁层的磁化特性。在临界态Bean模型的基础上研究了磁通量对超导芯的穿透，发现非磁滞磁鞘的存在可以大大增强磁通量的完全穿透场。计算了超导体/磁体异质结构的平均磁化强度和灯丝芯部的磁滞交流损耗。
英文摘要：
We study the magnetization of a cylindrical type-II superconductor filament covered by a coaxial soft-magnet sheath and exposed to an applied transverse magnetic field. Examining penetration of magnetic flux into the superconductor core of the filament on the basis of the Bean model of the critical state, we find that the presence of a non-hysteretic magnetic sheath can strongly enhance the field of full penetration of magnetic flux. The average magnetization of the superconductor/magnet heterostructure under consideration and hysteresis AC losses in the core of the filament are calculated as well.
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