NdFeB磁体磁化及温度处理后磁畴结构的变化  

Changes in domain structures of NdFeB permanent magnet after magnetization and temperature treatment

作　　者：陈杰[1,2] 张明[2] 徐光亮[1] 向海蓉[2] 王敬东[2] 

机构地区：[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

出　　处：《磁性材料及器件》2012年第2期29-31,35,共4页Journal of Magnetic Materials and Devices

基　　金：国家重大科技专项(2008ZX01006-005)

摘　　要：采用磁力显微镜(Magnetic force microscopy,MFM)和X射线衍射(XRD)研究了烧结NdFeB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。We studied the phase components and magnetic domain structure of sintered NdFeB permanent magnet after magnetization and high-temperature treatment using magnetic force microscopy （MFM） and X-ray diffraction （XRD） as well as high-coercivity Co-Cr magnetic probe, made an analysis of the effect of magnetization and heat treatment on the phase components and magnetic domain structures. It is found that magnetization and high-temperature treatment result in no changes in the phase components, but obvious changes occurs in the magnetic domain structure ; open-circuit magnetic flux loss may attribute to the change of magnetic domain structures.

关 键 词：NDFEB磁体 磁化 高温处理 磁力显微镜 磁畴结构 

分 类 号：TM273[一般工业技术—材料科学与工程] O482.51[电气工程—电工理论与新技术]