Skip to main content
SpringerLink
Log in

Effects of the grain alignment on the coercivity and its angular dependence for NdCoFeB permanent magnets

  • Bulletin
  • Published:
Chinese Science Bulletin

Abstract

The dependence of the macroscopic magnetism for NdCoFeB permanent magnet on the degree of grain alignment has been studied. With an increase in grain alignment degree, the coercivity of the permanent magnet decreases and the remanence increases. The decrease rate of the coercivity is smaller than the increase rate of the remanence. The coercivity Hc(θ) increases with increasing angle θ between the applied field and the texture axis, and for the permanent magnets with good grain alignment the increase rate of Hc(θ) is large. These experimental results can be interpreted by using the starting field theory of coercivity.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Martineck, G., Kronmüller, H., Influence of grain orientation on the coercive field in Fe-Nd-B permanent magnets,J. Magn. Magn. Muter., 1990, 86: 177.

    Article  Google Scholar 

  2. Elbaz, D., Givord, G., Hirosawa, S.et al., Angular dependence of coercivity in sintered RFeB magnets,1. Appl. Phys., 1991, 69: 5492.

    Article  CAS  Google Scholar 

  3. Gao Ruwei, Zhou Shouzeng, Zhang Dehenget al., Coercivity and its dependence on orientation magnetic field in NdFeB sintered magnets,J. Appl. Phys., 1995, 78: 1156.

    Article  Google Scholar 

  4. Gao Ruwei, Zhou Shouzeng, Li Huaet al., Theoretical and experimental study on coercivity mechanism of sintered NdFeB permanent magnet alloys,Acta. Physica Sinica, 1994, 43: 143.

    Google Scholar 

  5. Kronmüller, H., Schrefl, T., Interactive and cooperative magnetization processes in hard magnetic materials,J. Magn. Magn. Mater., 1994. 129: 66.

    Article  Google Scholar 

  6. Gao Ruwei, Zhang Deheng, Effects of the grain alignment on the coercivity for NdFeB magnets,Jpn. J. Appl. Phys., 1996, 35: 4628.

    Article  Google Scholar 

  7. Schrefl, T., Fidler, J., Numerical simulation of magnetization reversal in hard magnetic materials using a finite element method,J. Magn. Magn. Mater., 1992, 111: 105.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Physics, Shandong University, 250100, Jinan, China

    Ruwei Gao, Deheng Zhang & Jiancheng Zhang

  2. Central Iron & Steel Research Institute, 100081, Beijing, China

    Wei Li & Changguo Ji

Authors
  1. Ruwei Gao
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Wei Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Changguo Ji
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Deheng Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Jiancheng Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

About this article

Cite this article

Gao, R., Li, W., Ji, C. et al. Effects of the grain alignment on the coercivity and its angular dependence for NdCoFeB permanent magnets. Chin. Sci. Bull. 43, 107–111 (1998). https://doi.org/10.1007/BF02883918

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02883918

Keywords

Search

Navigation