The Magnetism of bcc Iron

  • D. M. Edwards
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 29)


In ferromagnetic insulators, and in rare-earth metals, the magnetic properties are associated with definite atomic magnetic moments which exist above the Curie temperature Tc and whose directions become ordered below Tc. Such systems are described quite well by a simple Heisenberg model, and far above Tc, at 1.5Tc say, there is very little correlation between the directions of neighbouring spins. In this lecture we shall discuss the extent to which this picture applies to ferromagnetic transition metals and to iron in particular. There is one essential difference between the transition metals and the insulators and rare earths. In the latter case the atomic moments are associated with electrons localized on the atoms whereas in transition metals the magnetic moments arise from itinerant 3d electrons. We must therefore consider the following points:
  1. 1.

    The concept of well-defined atomic moments above Tc in itinerant- electron systems.

  2. 2.

    The degree of short-range order above Tc.



Dispersion Curve Exchange Parameter Heisenberg Model Paramagnetic State Local Moment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    W.E. Evanson, J.R. Schrieffer and S.Q. Wang., J. Appl. Phys. 41, 1199 (1970).ADSCrossRefGoogle Scholar
  2. 2.
    M. Cyrot, Phys. Rev. Lett. 25, 871 (1970).ADSCrossRefGoogle Scholar
  3. 3.
    L.M. Roth, Inst. Phys. Conf. Ser. No. 39, 473 (1978).Google Scholar
  4. 4.
    H. Hasegawa, J. Phys. Soc. Japan 46, 1504 (1979).ADSCrossRefGoogle Scholar
  5. 5.
    H. Hasegawa, Solid State Commun., 31, 597 (1979).ADSCrossRefGoogle Scholar
  6. 6.
    D.G. Pettifor, J. Magn. Magn. Met. 15–18, 847 (1980).Google Scholar
  7. 7.
    J. Hubbard, Phys. Rev. B 20, 4584 (1979).ADSGoogle Scholar
  8. 8.
    J. Hubbard, to be published.Google Scholar
  9. 9.
    H. Hasegawa, J. Phys. Soc. Japan, 49, 178 (1980); 49, 963 (1980).ADSCrossRefGoogle Scholar
  10. 10.
    D.M. Edwards, Phys. Lett. A33, 183 (1970).ADSGoogle Scholar
  11. 11.
    M. Sakoh and D.M. Edwards, Phys. Stat. Sol. (b) 70, 611 (1975).ADSCrossRefGoogle Scholar
  12. 12.
    D.M. Edwards, J. Magn. Magn. Mat. 15–18, 262 (1980).Google Scholar
  13. 13.
    P.J. Schurer, K.W. Maring, F. Van der Woude and G.A. Sawatzky, Int. J. Magnetism 4, 291 and 297 (1973).Google Scholar
  14. R. Riedinger and M. Nauciel-Bloch, J. Phys. F. 5, 732 (1975).ADSCrossRefGoogle Scholar
  15. 14.
    B.L. Gyorffy and G.M. Stocks, in Electrons in Disordered Metals and at Metallic Surfaces, edited by P. Phariseau, B.L. Gyorffy and L. Shiere (Plenum, New York 1979).Google Scholar
  16. 15.
    J.A. Hofmann, A. Paskin, K.J. Teuer, and R.J. Weiss, J. Phys. Chem. Solids 1, 45 (1956).ADSCrossRefGoogle Scholar
  17. 16.
    H. Hasegawa, Solid State Commun., to be published.Google Scholar
  18. 17.
    R.E. Prange and V. Korenman, Phys. Rev. B 19, 4691 (1979) and references contained therein; Inst. Phys. Conf. Ser. No. 39 567 (1978).ADSCrossRefGoogle Scholar
  19. 18.
    V. Korenman and R.E. Prange, Solid State Commun. 31, 909 (1979).ADSCrossRefGoogle Scholar
  20. 19.
    J.W. Lynn, Phys. Rev. B.11 2624 (1975).ADSCrossRefGoogle Scholar
  21. 20.
    B.S. Shastry, D.M. Edwards and A.P. Young, to be published.Google Scholar
  22. 21.
    Als-Neilsen, J., in Phase Transitions and Critical Phenomena, Vol.5A, edited by C. Domb and M.S. Green pp.139–145.Google Scholar
  23. 22.
    M.V. You, V. Heine, A.J. Holden and P.J. Lin-Chung, Phys. Rev. Lett. 44, 1282 (1980).ADSCrossRefGoogle Scholar
  24. 23.
    S.W. Lovesey and R.A. Meserve, J. Phys. C. 6, 79 (1973).ADSCrossRefGoogle Scholar
  25. 24.
    Report on Panel Discussion on Itinerant Electron Magnetism, Conference on Physics of Transition Metals, Leeds, 1980 (Inst. Phys. Conf. Ser. to be published).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1981

Authors and Affiliations

  • D. M. Edwards
    • 1
  1. 1.Department of MathematicsImperial CollegeLondonEngland

Personalised recommendations