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

Journal of Materials Research volume 16, pages2992–2995(2001)Cite this article

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.

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Affiliations

  1. State Key Laboratory of Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, 100080, Beijing, People’s Republic of China

    Zhen Rong Zhang & Bao Shan Han

  2. Beijing Zhong Ke San Huan High-Tech Co., Ltd., 100080, Beijing, People’s Republic of China

    Ye Qing He

  3. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People’s Republic of China

    Shou Zeng Zhou

Authors
  1. Zhen Rong Zhang
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  2. Bao Shan Han
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  3. Ye Qing He
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  4. Shou Zeng Zhou
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Correspondence to Zhen Rong Zhang.

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Zhang, Z.R., Han, B.S., He, Y.Q. et al. Plate domain structure of sintered NdFeB magnets and dependence on compacting mode. Journal of Materials Research 16, 2992–2995 (2001). https://doi.org/10.1557/JMR.2001.0410

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