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首页> 外文期刊>IEEE Transactions on Magnetics >Calculation of magnetic flux profiles and deduction of critical current densities for type II superconductors
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Calculation of magnetic flux profiles and deduction of critical current densities for type II superconductors

机译：II型超导体的磁通量分布计算和临界电流密度的推导

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摘要

The critical state concept for the calculation of internal flux profiles in type II superconductors is used to model the magnetization behavior of high-T/sub c/ materials. In this application of the model, the field-dependent reversible magnetization and critical current density are incorporated flexibly into numerical solutions of the basic equations. The solutions are compared to results obtained by using the Bean (constant J/sub c/) and Kim (field dependent J/sub c/) approximations. The authors use theoretically calculated magnetization curves to analyze experimental magnetization data for bulk, textured Y/ErBaCuO samples obtained from their own work and from recently published work. Pitfalls and guidelines when using such measurements to obtain intrinsic material critical current densities are discussed.
机译：用于计算II型超导体内部磁通量分布的临界状态概念用于对高T / sub c /材料的磁化行为进行建模。在该模型的应用中，将与磁场有关的可逆磁化强度和临界电流密度灵活地纳入基本方程的数值解中。将解决方案与通过使用Bean（常数J / sub c /）和Kim（与字段有关的J / sub c /）近似得到的结果进行比较。作者使用理论上计算出的磁化曲线来分析从他们自己的工作和最近发表的工作中获得的块状，纹理化Y / ErBaCuO样品的实验磁化数据。讨论了使用此类测量获得固有材料临界电流密度时的陷阱和指南。

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