高温超导体处于4．2K温区的临界态模型

A CRITICAL STATE MODEL FOR HIGH Tc SUPERCONDUCTORS AT 4.2K

本文基于高温超导体在４．２Ｋ温区的电磁行为，通过观察高温超导体在４．２Ｋ温区的Ｊ＿ｃ－Ｂ曲线提出了一种不同于Ｂｅａｎ模型和Ｋｉｍ模型的新的临界态模型，这种模型能克服Ｂｅａｎ模型和Ｋｉｍ模型的不足之处。本文也用这种模型简要地计算了磁通在超导体内的穿透情况。

In this paper,we present a new kind of critical state model for high Tcsuperconductors at 4.2K. The situation with which a semi-infinite tapes is inexternal fields was studied by the critical state model.The Jc-B curves ofhigh Tc superconductors at 4.2K were explained by the model.