Neutron Diffraction Study of ErFe2

  • M. O. Bargouth

Abstract

Cubic Laves phase compounds (MgCu2-structure) involving rare earths have received considerable attention recently. We have undertaken neutron diffraction measurements on powder ErFe2 between 4.2 and 680ºK. The temperature dependence of the sublattice magnetization has been determined from the temperature dependence of the individual magnetic reflections, which are sensitive to either Er, Fe, or (Er+Fe) and (Er−Fe). The magnetic properties of ErFe2 will be discussed in terms of three molecular field parameters. It is concluded that the Er-Er interaction decreases rapidly with increasing temperature and that the Er-Fe interaction strongly affects the values of the erbium sublattice moment between 350 and 600ºK. The Fe-Fe interaction seems to dominate and tends to mask the Er-Fe and the Er-Er effects.

Keywords

Egypt Erbium 

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References

  1. 1.
    W.E. Wallace, Progress in the Science and Technology of the Rare Earths, Vol. 3, Oxford (1968) 1–37.Google Scholar
  2. 2.
    J. Crangle, J.W. Rosse, Proc. Int. Conf. on Magnetism, Nottingham (1964) 240–243.Google Scholar
  3. 3.
    F.K. Lotgering, Philips Res. Rep. 11 161 (1956).Google Scholar
  4. 4.
    W.E. Wallace, F.A. Scrabek, Rare Earth Research, Vol. 2, Gordon and Breach, New York (1964) 431.Google Scholar
  5. 5.
    K.H.J. Buschow, A.S. Van der Goot, Phys. Status Solidi 35 515 (1969).CrossRefGoogle Scholar
  6. 6.
    M.O. Bargouth, G. Will, J. de Physique 32-C1 675 (1971).Google Scholar
  7. 7.
    G. Will, M.O. Bargouth, Phys. kondens. Materie 13 137 (1971).CrossRefGoogle Scholar
  8. 8.
    R.M. Moon, W.C. Koehler, J. Farrell, J. Appl. Phys. 36 978 (1965).CrossRefGoogle Scholar
  9. 9.
    J.S. Smart, Effective Field Theory of Magnetism, Philadelphia (1966).Google Scholar

Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • M. O. Bargouth
    • 1
  1. 1.Cairo UniversityCairoEgypt

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