Anisotropy of grain boundary diffusion in sintered Nd-Fe-B magnet

被引：32
|
作者：
Niu, E. [1 ,2 ]
Chen, Zhi-An [2 ]
Ye, Xuan-Zhang [2 ]
Zhu, Wei [2 ]
Chen, Guo-An [2 ,3 ]
Zhao, Yu-Gang [2 ,3 ]
Zhang, Jin [2 ,3 ]
Rao, Xiao-Lei [2 ]
Hu, Bo-Ping [2 ]
Wang, Zhen-Xi [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China
[2] Beijing Zhong Ke San Huan Res, Beijing 102200, Peoples R China
[3] Sanvac Beijing Magnet Co Ltd, Beijing 102200, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 26期
关键词：
COERCIVITY; MAGNETIZATION; ENHANCEMENT; ALLOY; TB;
D O I：
10.1063/1.4886767
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The grain boundary diffusion (GBD) was applied to magnetically aligned Nd-Fe-B sintered magnets on their different surfaces. The demagnetization curves show better squareness for Dy diffusing from the pole surfaces than that from the side surfaces. Kerr magnetic domain patterns on magnet surfaces in aligned and unaligned magnets were observed together with in situ optical microscope images. It indicates that the anisotropy of the GBD effect is attributed to the anisotropic texture of the grain boundary Nd-rich phase in the magnet. (C) 2014 AIP Publishing LLC.
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页数：3
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