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Plate domain structure of sintered NdFeB magnets and dependence on compacting mode

Published online by Cambridge University Press:  31 January 2011

Zhen Rong Zhang ,
Bao Shan Han ,
Ye Qing He  and
Shou Zeng Zhou
Zhen Rong Zhang
Affiliation:
State Key Laboratory of Magnetism, Institute of Physics, and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Bao Shan Han
Affiliation:
State Key Laboratory of Magnetism, Institute of Physics, and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Ye Qing He
Affiliation:
Beijing Zhong Ke San Huan High-Tech Co., Ltd., Beijing 100080, People's Republic of China
Shou Zeng Zhou
Affiliation:
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
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Abstract

The alignment degree of sintered Nd–Fe–B magnets and its dependence on applied field and compacting mode were studied by magnetic force microscopy. By analyzing the magnetic force images to illustrate the magnetic-domain structure, an experimental method for quantitatively evaluating the alignment degree of sintered Nd–Fe–B magnets was given. The results show that if the compacting mode is the same, the alignment of magnets will be better as field increases. Under the same field, the alignment degree for rubber isostatic pressing with vibration is better than that for nonmagnetic metal die pressing. However, if the sample is compacted by rubber isostatic pressing without vibration, the alignment degree decreases significantly.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 10 , October 2001 , pp. 2992 - 2995
Copyright
Copyright © Materials Research Society 2001

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References

1Kawai, T., Ma, B.M., Sankar, S.G., and Wallace, W.E., J. Appl. Phys. 67, 4610 (1990).CrossRefGoogle Scholar
2Ferrante, M., de Freitas, E., and Sinka, V., J. Magn. Magn. Mater. 188, 125 (1998).CrossRefGoogle Scholar
3Volkov, V.V. and Zhu, Y., J. Appl. Phys. 85, 3254 (1999).CrossRefGoogle Scholar
4Fernengel, W., Lehnert, A., Katter, M., Rodewald, W., and Wall, B., Magn, J.. Magn. Mater. 157/158, 158 (1996).CrossRefGoogle Scholar
5Kim, A.S., in Proceedings of the 3rd International Symposium Phys. Mag. Mater. (ISPMM 95), in High Performance, Temperature Stable, and Corrosion Resistant NdFeB Magnets, edited by Kim, C.S., Lee, T.D., and Oh, J.H. (The Korean Magnetic Society, Seoul, Korea, 1995), p. 646.Google Scholar
6Endoh, M. and Shindo, M., in 13th International Workshop on RE Magnets and Their Applications: Material Design and Fabrication of High Energy Nd–Fe–B Sintered Magnets (Birmingham University Press, Birmingham, United Kingdom, 1994), p. 397.Google Scholar
7Kaneko, Y., Tokuhara, K, and Ishigaki, N, Vacuum 47, 907 (1996).CrossRefGoogle Scholar
8Xu, H., Han, B.S., Yang, J.B., and Yang, Y.C., Sci. China Ser. A 42, 93 (1999).CrossRefGoogle Scholar
9Gao, Y.H., Zhu, J.H., Weng, Y.Q., and Han, B.S., Appl. Phys. Lett. 74, 1749 (1999).CrossRefGoogle Scholar