亚微米级铁磁条的磁场分布  

Calculation of Magnetic Field for the Submicron Ferromagnet

作　　者：刘晓霞[1] 代波[1] 倪经[2] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]西南应用磁学研究所,四川绵阳621000

出　　处：《磁性材料及器件》2009年第6期24-27,共4页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金资助项目(10704061)

摘　　要：基于等效磁荷模型,导出了仅在一个方向均匀完全磁化的矩形亚微米磁条在外部空间磁场分布的解析表达式。通过对单个磁条的空间磁场的数值分析,得出了不同宽度、不同厚度的磁条磁场的二维分布,总结了磁条外部空间磁场的分布规律,确定出最合适的铁磁层的宽度和厚度及隔离层的厚度范围。得出了磁化后的铁磁层FM1的磁场在相邻铁磁层FM2处的分布情况。这对研究磁性三明治结构(铁磁层FM1/隔离层NM/铁磁层FM2)中磁性层之间的耦合有一定的参考价值。In this article, based on the equivalent magnetic charge model, an analytic expression was derived exactly describing magnetic field distribution of rectangular ferromagnet magnetized sufficiently in. one direction. By analysing the spatial magnetie field emanating from a single ferromagnet, two-dimensional magnetic field distribution of ferromagnet with different thickness and width was obtained. And as result, applicable thickness and width range of ferrornagnet and thickness of isolation layer is summarized. Then magnetic field distribution of magnetized FM1 on FM2 is summarized. It is usefull for study of coupling between FMl and FM2 in a ferromagnetic layer（FM1）/isolation layer（NM）/ferromagnetic layer（FM2） sandwich structure.

关 键 词：亚微米铁磁条 等效磁荷 磁场 

分 类 号：TM153[电气工程—电工理论与新技术]