Investigation of magnetic properties of MnSi/Co and MnBi/Fe65CO35 nanocomposite permanent magnets by micro-magnetic simulation
Investigation of magnetic properties of MnSi/Co and MnBi/Fe65CO35 nanocomposite permanent magnets by micro-magnetic simulation
复制标题
微磁模拟研究MnSi/Co和MnBi/Fe65CO35纳米复合永磁体的磁性能
DOI：
10.1016/j.jmmm.2015.06.023
复制
发表时间：
2015
影响因子：
2.7
通讯作者：
Gao Y.
中科院分区：
文献类型：
--
作者：
Li Y. Q.;Yue M.;Wang T.;Wu Q.;Zhang D. T.;Gao Y.
Demagnetization curves of anisotropic nanocomposite MnBi/Co and MnBi/Fe65Co35permanent magnets were investigated by micro-magnetic finite element method. Effects of volume ratio, deviation degree of orientation and intrinsic magnetic properties of the soft magnetic phase on the magnetic properties of the magnets were investigated. From the viewpoint of practical applications, to meet the requirement of hardness parameters,ĸ=K/(μ0MS2)1/2>1, the calculation maximum (BH)max of MnBi/Co and MnBi/Fe65Co35magnets are about 199 kJ/m3(V(Co)=22 vol%) and 196 kJ/m3(V(FeCo)=14 vol%), respectively, indicating their good potential in application. Compared with single phase MnBi magnet, the (BH)maxof nanocomposite MnBi/Co and MnBi/Fe65Co35magnets increases by 66% and 63%, respectively. The remanence and coercivity of MnBi/Co nanocomposite magnets reduce as appearing a deviation degree of orientation, result of greatly decrease of the magnetic energy product.
