A new demagnetization correction method is explained in this article. Since a magnetization curve in an open magnetic circuit is considerably affected by the demagnetizing field which depends on the shape of the magnetic material, the demagnetization correction is significantly important to evaluate the magnetic properties of magnetic materials. In the new demagnetization correction method, a proper closed magnetic circuit curve is obtained in a way that a curve defined as a mathematical function is repeatedly modified in a computer feedback loop. In the method, the distribution of the demagnetizing field inside the magnetic material is taken into account by using the finite-element method in the computer calculation. Some calculation results about rare-earth permanent magnets are shown, and it is revealed that the new demagnetization correction method is able to reproduce the measured curves in the closed magnetic circuit with much higher accuracy than that of the classical demagnetization correction method.

中文翻译：

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考虑退磁场分布的反分析退磁修正方法

本文介绍了一种新的退磁校正方法。由于开放磁路中的磁化曲线受退磁场的影响很大，退磁场取决于磁性材料的形状，因此退磁校正对于评估磁性材料的磁性能非常重要。在新的退磁校正方法中，通过在计算机反馈回路中反复修改定义为数学函数的曲线的方式，获得适当的闭合磁路曲线。该方法在计算机计算中采用有限元方法考虑了磁性材料内部退磁场的分布。稀土永磁体的一些计算结果如下所示，