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From molecular current viewpoint, demagnetizing field and process of permanent magnet, taking rectangular permanent magnets for example, the various factors that affect inhomogeneity of external magnetic field for permanent magnet are analyzed. The results indicate that the macroscopic inhomogeneity of external magnetic field for permanent magnet is closely related to space distance and shape of permanent magnet design. Demagnetizing field of permanent magnet has a complex influence on micro-inhomogeneity of external magnetic field. Technology of permanent magnet such as powder particles, orientation degree, sintering solidification, mechanical processing will affect inhomogeneity of external magnetic field of permanent magnet such as magnetic degree, symmetry, smoothness, etc.
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Keywords:
- permanent magnet /
- external magnetic field /
- inhomogeneity /
- demagnetizing field
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[2] Wu X L 2002 Ph. D. Dissertation (Beijing:Institute of Electronics, Chinese Academy of Sciences) (in Chinese) [吴迅雷2002 博士学位论文(北京:中国科学院电子所)]
[3] Wu H D 2007 Ph. D. Dissertation (Hefei:University of Science and Technology of China) (in Chinese) [武海潡 2007 博士学位论文 (合肥:中国科学技术大学)]
[4] Yang Z H 2000 High Power Laser and Particle de Beams 12 556 (in Chinese) [杨震华 2000 强激光与粒子束 12 556]
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[6] Chen Y W 2009 M. S. Dissertation (Changsha:The National University of Defense Technology) (in Chinese) [成玉卫2009 硕士学位论文 (长沙:国防科学技术大学)]
[7] Fu M, Huang X L, Zhou G, Shen Y 2007 Sma. Spec. Elec. Mach. 35 1 (in Chinese) [傅萌, 黄学良, 周赣, 沈妍 2007微特电机 35 1]
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[10] He Y Z, Zhou Q G, Zhang J D 2011 Chin. Phys. C 35 392
[11] Zhou S Z 2011 Sintered NdFeB Rare Earth Permanent Magnet Materials and Technology (Beijing:Metallurgical Industry Press) p94 [周寿增 2011 烧结钕铁硼稀土永磁材料与技术 (北京:冶金工业出版社) 第94页]
[12] He Y Z, Zhou Q G 2012 High Power Laser and Particle Beams 24 2187 (in Chinese) [何永周, 周巧根2012 强激光与粒子束 24 2187]
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[1] Zhou S Z, Dong Q F 1999 Super Permanent Magnet (Beijing:Metallurgical Industry Press) p145 [周寿增, 董清飞 1999 超强永磁体(北京:冶金工业出版社)第 145 页]
[2] Wu X L 2002 Ph. D. Dissertation (Beijing:Institute of Electronics, Chinese Academy of Sciences) (in Chinese) [吴迅雷2002 博士学位论文(北京:中国科学院电子所)]
[3] Wu H D 2007 Ph. D. Dissertation (Hefei:University of Science and Technology of China) (in Chinese) [武海潡 2007 博士学位论文 (合肥:中国科学技术大学)]
[4] Yang Z H 2000 High Power Laser and Particle de Beams 12 556 (in Chinese) [杨震华 2000 强激光与粒子束 12 556]
[5] Chen N, Zhang P F, Li G, Xu H L, Li Y H, Zhang S C, Cai G W, He D H 2005 Nucl. Tech. 28 258 (in Chinese) [陈念, 张鹏飞, 李格, 徐宏亮, 李煜辉, 张善才, 蔡根旺, 何多慧 2005 核技术 28 258]
[6] Chen Y W 2009 M. S. Dissertation (Changsha:The National University of Defense Technology) (in Chinese) [成玉卫2009 硕士学位论文 (长沙:国防科学技术大学)]
[7] Fu M, Huang X L, Zhou G, Shen Y 2007 Sma. Spec. Elec. Mach. 35 1 (in Chinese) [傅萌, 黄学良, 周赣, 沈妍 2007微特电机 35 1]
[8] Gou X F, Yang Y, Zheng X J 2004 Appl. Math. Mech. 25 271 (in Chinses) [苟晓凡, 杨勇, 郑晓静 2004 应用数学与力学 25 271]
[9] Zhao K H, Chen X M 2003 Electromagnetics (1st Ed.) (Beijing:Higher Education Press) p227 [赵凯华, 陈熙谋 2003 电磁学 (北京:高等教育出版社) 第227页]
[10] He Y Z, Zhou Q G, Zhang J D 2011 Chin. Phys. C 35 392
[11] Zhou S Z 2011 Sintered NdFeB Rare Earth Permanent Magnet Materials and Technology (Beijing:Metallurgical Industry Press) p94 [周寿增 2011 烧结钕铁硼稀土永磁材料与技术 (北京:冶金工业出版社) 第94页]
[12] He Y Z, Zhou Q G 2012 High Power Laser and Particle Beams 24 2187 (in Chinese) [何永周, 周巧根2012 强激光与粒子束 24 2187]
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