晶粒形状对计算纳米晶NdFeB永磁材料退磁曲线的影响  

Effect of the Shape of Grain on the Calculated Demagnetization Curve for Nanocrystalline NdFeB Magnets

作　　者：闫羽[1] 金汉民[1] 王学凤[1] 苏峰[1] 

机构地区：[1]吉林大学物理学院,长春130021

出　　处：《金属功能材料》2003年第3期8-9,共2页Metallic Functional Materials

基　　金：吉林大学纳米专项基金资助

摘　　要：用微磁学有限元法计算了纳米晶Nd2 Fe14 B永磁材料的退磁曲线。磁体模型中的晶粒分别为立方体晶粒和 14面体晶粒。The demagnetization curves for nanocrystalline NdFeB magnets were calculated by using micromagnetic finite element technique The model of magnet consists of either cubic or cubo octahedral Nd 2Fe 14 B grains The results for the two grain shapes show that the effect of the shape of the grains on the calculated demagnetization curve is negligibly small

关 键 词：纳米晶 NDFEB 永磁材料 退磁曲线 微磁学有限元法 立方体晶粒 14面体晶粒 磁体模型 

分 类 号：TM273[一般工业技术—材料科学与工程]