从快淬纳米晶NdFeB永磁材料的矫顽力iHc与晶粒直径L的关系的计算与实验(Nd2.33Fe14B1.06Si0.21)比较得出,跨晶界单位面积交换作用随L的关系.随着L从0增加到约12.4、37.2、49.6nm,交换作用相对于没有晶界相时减少到~80%、~50%、~40%.计算运用了微磁学有限元法.
参考文献
[1] | Jin Han-Min;Wang Xue-Feng .Anisotropic characteristics of demagnetization curve for nanocrystalline Nd-Fe-B Magnet Calculated By micromagnetics[J].Chinese physics,2001(9):862-868. |
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