文档介绍：研究·分析·实验
NdFeB 磁体磁化及温度处理后磁畴结构的变化
陈杰 1,2,张明 2,徐光亮 1,向海蓉 2,王敬东 2
(1. 西南科技大学材料科学与工程学院,四川绵阳 621010;
2. 西南应用磁学研究所,四川绵阳 621000)
摘要:采用磁力显微镜(M ic force microscopy, MFM)和 X 射线衍射(XRD)研究了烧结 NdF eB 磁体磁化
及 125℃高温处理后的磁畴结构,分析了磁化及温度处理对磁体物相成分及磁畴结构的影响。结果发现,磁化及高温
处理后磁体的相结构没有发生变化,而磁畴结构却发生明显变化;开路磁通的变化是磁畴结构变化引起的。
关键词:NdFeB 磁体;磁化;高温处理;磁力显微镜;磁畴结构
中图分类号:TM273; 文献标识码:A 文章编号:1001-3830(2012)02-0029-03
Changes in domain structures of NdFeB permanent after
ization and temperature treatment
CHEN Jie1,2,ZHANG Ming2,XU Guang-liang1,XIANG Hai-rong2,WANG Jing-dong2
1. School of Materials Science and Engineering, Southwest University of
Science and Technology, Mianyang 621010, China;
2. Southwest Institute of Applied ics, Mianyang 621000, China
Abstract: We studied the ponents and ic domain structure of sintered NdFeB permanent
after ization and high-temperature treatment using ic force microscopy (MFM) and X-ray
diffraction (XRD) as well as high-coercivity Co-Cr ic probe, made an analysis of the effect of ization and
heat treatment on the ponents and ic domain structures. It is found that ization and
hi gh-temperature treatment result in no changes in the ponents, but obvious changes occurs in the ic
domain structure ; open-circuit ic flux loss may attribute to the change of ic domain structures.
Key words: NdFeB permanent ; izati