| Original Articles |
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Magnetic Agglomeration Among Nd-Fe-B Particles and Its
Influence on Field Aligning |
| HE Ye-Qing1;WANG Zhen-Xi1;ZHOU Shou-Zeng2;ZHANG Zhen-Rong3;HAN Bao-Shan3 |
| 1Beijing Zhong Ke San Huan High-Tech Co., Ltd., Beijing 100080
2State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083
3State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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HE Ye-Qing, WANG Zhen-Xi, ZHOU Shou-Zeng et al 2004 Chin. Phys. Lett. 21 191-193 |
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Abstract There exists strong magnetic agglomeration among Nd-Fe-B particles. Due to this effect, an applied field even up to 1350 kAm-1 still can not make the loose Nd-Fe-B powders to reach saturated magnetization. SEM images of a little amount of Nd-Fe-B powders were used to illustrate the agglomeration phenomenon. We believe that the general existence of misalignment grains in the magnetic force images of the sintered Nd-Fe-B magnet fabricated by die pressing with 1500 kAm-1 aligning field is a confirmation of the magnetic agglomeration.
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| Keywords:
75.50.Ww
81.20.Ev
75.30.Gw
68.37.Rt
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Published: 01 January 2004
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| PACS: |
75.50.Ww
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(Permanent magnets)
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81.20.Ev
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(Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)
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75.30.Gw
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(Magnetic anisotropy)
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68.37.Rt
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(Magnetic force microscopy (MFM))
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