Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-23T02:16:09.671Z Has data issue: false hasContentIssue false
  • English
  • Français

Magnetic hardening mechanism in sintered R–Fe–B permanent magnets

Published online by Cambridge University Press:  31 January 2011

M. Sagawa  and
S. Hirosawa
M. Sagawa
Affiliation:
Sumitomo Special Metals Company Ltd., Mishimagun, Osaka 618, Japan
S. Hirosawa
Affiliation:
Sumitomo Special Metals Company Ltd., Mishimagun, Osaka 618, Japan
Get access

Abstract

After a short review on temperature dependence of the intrinsic coercivity in sintered Nd–Fe–B-type magnets is given, recent experimental results concerning the coercivity-anisotropy (HC–HA) correlation in B-rich Pr–Fe–B and Nd–Fe–B sintered magnets and the influence of the surface conditions of the sintered Nd–Fe–B magnets on the coercivity are reported. The results are interpreted in terms of the μoHc vs cμoHA – NIs plot, where Is is the spontaneous magnetization of R2Fe14B (R = Pr or Nd) and N is the effective demagnetization field coefficient.

Type
Articles
Information
Journal of Materials Research , Volume 3 , Issue 1 , February 1988 , pp. 45 - 54
Copyright
Copyright © Materials Research Society 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Sagawa, M.Fujimura, S.Togawa, N.Yamamoto, H. and Matsuura, Y., J. Appl. Phys. 55, 2083 (1984).CrossRefGoogle Scholar
2Croat, J. J.Herbst, J. F.Lee, R. W. and Pinkerton, F. E.Appl. Phys. Lett. 44, 148 (1984); J. Appl. Phys. 55, 2078 (1984).CrossRefGoogle Scholar
3Lee, R. W.Appl. Phys. Lett. 46, 790 (1985).Google Scholar
4Herbst, J. F.Lee, R. W. and Pinkerton, F. E.Ann. Rev. Mater. Sci. 16, 467 (1986).Google Scholar
5Mishra, R. K.J. Appl. Phys. 62, 967 (1987).CrossRefGoogle Scholar
6Hirosawa, S.Tokuhara, K.Matsuura, Y.Yamamoto, H.Fuji-mura, S., and Sagawa, M.J. Magn. Magn. Mater 61, 363 (1986).CrossRefGoogle Scholar
7Herzer, G.Fernengel, W. and Adler, E.J. Magn. Magn. Mater. 58, 48 (1986).Google Scholar
8Durst, K.D. and Kronmiiller, H.Proceedings of the 18th International Workshop on Rare Earth Magnets and Their Applications, edited by Strnat, K. J. (University of Dayton, Dayton, OH, 1985), pp. 725.Google Scholar
9Adler, E. and Hamann, P. in Ref. 8, pp. 747.Google Scholar
10Givord, D.Li, H. S. and Perrier, R.de la Bathie, Solid State Commun. 51, 857 (1984).Google Scholar
11Sagawa, M.Fujimura, S.Yamamoto, H.Matsuura, Y. and Hi-raga, K., IEEE Trans. Magn. MA6-20, 1584 (1984).Google Scholar
12Hirosawa, S.Matsuura, Y.Yamamoto, H.Fujimura, S.Sagawa, M. and Yamauchi, H.J. Appl. Phys. 59, 873 (1986).CrossRefGoogle Scholar
13Sagawa, M.Hirosawa, S.Tokuhara, K.Yamamoto, H.Fujimura, S.Tsubokawa, Y. and Shimizu, R.J. Appl. Phys. 61, 3559 (1987).CrossRefGoogle Scholar
14Hiroyoshi, H.Kato, H.Yamada, M.Saito, N. and Nakagawa, Y.Solid State Commun. 62, 475 (1987).CrossRefGoogle Scholar
15Zijlstra, H.J. Appl. Phys. 41, 4881 (1970).CrossRefGoogle Scholar
16Givord, D.Moreau, J. M. and Tenaud, P.Solid State Commun. 55, 303 (1985).Google Scholar
17Givord, D.Tenaud, P. and Viadies, T.J. Appl. Phys. 60, 3263 (1986).Google Scholar
18Hirosawa, S.Matsuura, Y.Yamamoto, H.Fujimura, S.Sagawa, M. and Yamauchi, H.Jpn. J. Appl. Phys. 24, L803 (1985).Google Scholar
19Smith, H. K. and Wallace, W. E.Lanthanide Actinide Res. 1, 217 (1985-1986).Google Scholar
20Ramesh, R.Chen, J. K. and Thomas, G.J. Appl. Phys. 61, 2993 (1987).Google Scholar
21Schrey, P.IEEE Trans. Magn. MAG-22, 913 (1985).Google Scholar
22Hiraga, K.Hirabayashi, M.Sagawa, M. and Matsuura, Y.Jpn. J. Appl. Phys. 24, 699 (1985).CrossRefGoogle Scholar
23Sagawa, M.Hirosawa, S.Yamamoto, H.Matsuura, Y.Fujimura, S.Tokuhara, H. and Hiraga, K.IEEE Trans. Magn. MAG-22, 910 (1986).Google Scholar
24Sagawa, M.Fujimura, S.Yamamoto, H.Matsuura, Y. and Hi-rosawa, S., IEEE Translation J. Magn. Japan TJMJ-1, 979 (1985).Google Scholar
25Hirosawa, S.Tokuhara, K.Yamamoto, H.Fujimura, S. and Sagawa, M.Jpn. J. Appl. Phys. 26, L1359 (1987).CrossRefGoogle Scholar