Coercivity Recovery Effect of Sm-Fe-Cu-Al Alloy on Sm2Fe17N3 Magnet

Abstract

The potential of a Sm-Fe-Cu-Al binder for improvement of the magnetic properties of Sm2Fe17N3 was examined. Transmission electron microscope (TEM) observation of a Sm-Fe-Cu-Al alloy-bonded Sm2Fe17N3 magnet which showed high coercivity revealed that the Sm-Fe-Cu-Al alloy had an effect of removing the surface oxide layer of the Sm2 Fe17N3 grains. However, the Sm-Fe-Cu-Al binder was contaminated by carbon and nitrogen, which originated from the organic solvent used as the milling medium during pulverization. To prevent carbon and nitrogen contamination, the Sm-Fe- Cu-Al alloy was added directly on the surface of the Sm2Fe17N3 grains by sputtering. Comparing the recovered coercivity per unit amount of the added binder the uncontaminated binder-coated sample had a higher coercivity recovery effect than the milled binder-added sample. These results suggested that sufficient addition of the contamination-free Sm-Fe-Cu-Al binder has the possibility to reduce the amount of binder necessary to produce a high coercive Sm2Fe17N3 magnet.

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References

  1. [1]

    J. M. D. Coey and H. Sun, Journal of Magnetism and Magnetic Materials. 87, 251 (1990).

    ADS  Article  Google Scholar 

  2. [2]

    M. Sagawa, S. Fujimura, N. Togawa, H. Yamamoto and Y. Matsuura, Journal of Applied Physics. 55, 2083 (1984).

    ADS  Article  Google Scholar 

  3. [3]

    T. Iriyama et al., IEEE Transactions on Magnetics. 28, 2587 (1992).

    Article  Google Scholar 

  4. [4]

    M. Katter, J. Wecker, C. Kuhrt, L. Schultz and R. Grössinger, Journal of Magnetism and Magnetic Materials. 117, 419 (1992).

    ADS  Article  Google Scholar 

  5. [5]

    K. Kobayashi, Q. Qi and J. M. D. Coey, J. Magn. Magn. Mater. 144, 1077 (1995).

    ADS  Article  Google Scholar 

  6. [6]

    C. N. Christodoulou and N. Komada, Science. 222, 92 (1995).

    Google Scholar 

  7. [7]

    D. T. Zhang, M. Yue and J. X. Zhang, Powder Metallurgy. 50, 215 (2007).

    Article  Google Scholar 

  8. [8]

    J. M. D. Coey, J. F. Lawler, H. Sun and J. E. M. Allan, Journal of Applied Physics. 69, 3007 (1991).

    ADS  Article  Google Scholar 

  9. [9]

    K. Schnitzke, L. Schultz, J. Wecker and M. Katter, Applied Physics Letters. 57, 2853 (1990).

    ADS  Article  Google Scholar 

  10. [10

    M. Leonowicz, W. Kaszuwara, E. Jezierska and D. Januszewski, Journal of Applied Physics. 83, 6634 (1998).

    ADS  Article  Google Scholar 

  11. [11]

    T. Mashimo et al., Journal of Magnetism and Magnetic Materials. 210, 109 (2000).

    ADS  Article  Google Scholar 

  12. [12]

    H. Oda et al., Japanese Journal of Applied Physics. 34, L35 (1995).

    Article  Google Scholar 

  13. [13]

    K. Takagi, H. Nakayama and K. Ozaki, Journal of Magnetism and Magnetic Materials. 324, 2336 (2012).

    ADS  Article  Google Scholar 

  14. [14]

    K. Kobayashi, T. Iriyama, T. Yamaguchi, H. Kato and Y. Nakagawa, Journal of Alloys and Compounds. 193, 235 (1993).

    Article  Google Scholar 

  15. [15]

    K. Otogawa, K. Takagi and T. Asahi, Journal of Alloys and Compounds (in press).

  16. [16]

    R. Soda, K. Takagi, M. Jinno, W. Yamaguchi and K. Ozaki, AIP Advances. 6, 115108 (2016).

    ADS  Article  Google Scholar 

  17. [17]

    NIST, [Žiūrėta: 2017-05-20] (Nov., 2017), http://srdata. nist.gov/xps/Default.aspx.

  18. [18]

    K. H. Goh, A. S. M. A. Haseeb and Y. H. Wong, Journal of Alloys and Compounds. 722, 729 (2017).

    Article  Google Scholar 

  19. [19]

    B. Balamurugan, B. R. Mehta and S. M. Shivaprasad, Applied Physics Letters. 82, 115 (2003).

    ADS  Article  Google Scholar 

Download references

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Correspondence to Kenta Takagi.

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Otogawa, K., Asahi, T., Jinno, M. et al. Coercivity Recovery Effect of Sm-Fe-Cu-Al Alloy on Sm2Fe17N3 Magnet. J. Korean Phys. Soc. 72, 716–725 (2018). https://doi.org/10.3938/jkps.72.716

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Keywords

  • Sm2Fe17N3 magnet
  • Sputter coating
  • Quaternary eutectic alloy