Micromagnetic study for magnetic properties of exchange coupled nanocomposite magnetic systems with Nd2Fe14B grains embedded in α-Fe matrix

被引：7
作者：
Ryo, Hyok-Su [1 ,2 ]
Hu, Lian-Xi [1 ]
Yang, Yu-Lin [3 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Kim Il Sung Univ, Fac Phys, Pyongyang 999093, North Korea
[3] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 426卷
基金：
中国国家自然科学基金;
关键词：
Permanent magnet; Nanocomposite magnet; Exchange coupling; Micromagnetic simulation; Microstructure; Nd2Fe14B/a-Fe magnets; PERMANENT-MAGNETS; PHASE DISTRIBUTION; EFFECTIVE ANISOTROPY; SOFT; SIZE; MICROSTRUCTURE; COERCIVITY; SIMULATION;
D O I：
10.1016/j.jmmm.2016.11.059
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Developing high efficiency rare earth alloy magnets at low cost is an economically hopeful way to expand their application area. In this study, magnetic properties of nanocomposite isotropic exchange coupled systems with the structure of Nd2Fe14B crystalline grains embedded in a-Fe matrices have been simulated by micromagnetic finite element method (FEM). The results have been analyzed by means of the effect of volume fraction of nanosized exchange coupling area between the magnetically hard Nd2Fe14B and soft a-Fe phase on magnetic properties of the exchange coupled Nd2Fe14B/a-Fe magnetic systems. The results show that the magnetic systems with the structure of Nd2Fe14B grains embedded in a-Fe matrices can have comparatively advanced magnetic properties with small amount of Nd2Fe14B components, because of efficient inter-phase exchange coupling between magnetically hard Nd2Fe14B grains and soft a-Fe matrix.
引用
收藏
页码：46 / 52
页数：7
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