Changes in Domain Structure According to the Thickness of Non-oriented Electrical Sheets.
Changes in Domain Structure According to the Thickness of Non-oriented Electrical Sheets.
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域结构根据无取向电工板厚度的变化。
DOI：
10.3379/jmsjmag.25.903
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发表时间：
2001
影响因子：
--
通讯作者：
C. Kaido
中科院分区：
文献类型：
--
作者：
S. Iwashita;M. Takezawa;T. Honda;J. Yamasaki;C. Kaido
当无取向硅铁电工钢板厚度减小时，异常系数，即涡流损耗实测值与经典计算值的比值，会急剧增大。为了研究与板材厚度相关的异常因素的行为，利用克尔效应进行了磁域观察。薄板的晶粒呈现出条纹域图案。表面呈现条纹区域的颗粒在片材的横截面中具有封闭区域结构。研究发现，在片材平面上施加的磁场会感应出垂直于片材平面的磁化分量，这可能会增加薄片的异常系数。
The anomaly factor that is the ratio of the measured eddy current loss to the classical calculated value tends to increase steeply when the thickness of non-oriented Si-Fe electrical steel sheets is decreased. To investigate the behavior of the anomaly factor in relation to the sheets’ thickness, magnetic domain observation was performed, using the Kerr effect. The grains of a thinned sheet exhibit a stripe domain pattern. Grains exhibiting a stripe domain on the surface had a closure domain structure in a cross section of a sheet. It was found that a field applied in the sheet plane induced a magnetization component normal to the sheet plane, which may increase the anomaly factor of thin sheets.