Hostname: page-component-7479d7b7d-fwgfc Total loading time: 0 Render date: 2024-07-12T14:23:43.287Z Has data issue: false hasContentIssue false
  • English
  • Français

Bls Studies of Exchange Coupling in The Iron Whisker/Cr/Fe System

Published online by Cambridge University Press:  15 February 2011

J.F. Cochran ,
K. Totland ,
B. Heinrich ,
D. Venus  and
S. Govorkov
J.F. Cochran
Affiliation:
Simon Fraser University, Department of Physics, Burnaby, BC, Canada, V5A 1S6
K. Totland
Affiliation:
Simon Fraser University, Department of Physics, Burnaby, BC, Canada, V5A 1S6
B. Heinrich
Affiliation:
Simon Fraser University, Department of Physics, Burnaby, BC, Canada, V5A 1S6
D. Venus
Affiliation:
Simon Fraser University, Department of Physics, Burnaby, BC, Canada, V5A 1S6
S. Govorkov
Affiliation:
Simon Fraser University, Department of Physics, Burnaby, BC, Canada, V5A 1S6
Get access

Abstract

Brillouin light scattering (BLS) and magneto-optic Kerr effect have been carried out on a series of specimens consisting of a Fe(001) whisker substrate upon which thin Cr(001) and Fe(001) layers have been deposited by means of molecular beam epitaxy in ultrahigh vacuum. The Fe film was 20 monolayers (ML) thick, and the Cr(001) films were grown having various thicknesses. It is demonstrated that BLS thin film frequencies measured in the saturated magnetic state with the thin film magnetization parallel with the applied magnetic field can be used to obtain the exchange coupling strength between the thin film and whisker magnetizations both for antiferromagnetic coupling and for ferromagnetic coupling, provided that the ferromagnetic coupling is not too strong. It is also shown that the coupling strength is extremely sensitive to the quality of the chromium growth: a small deterioration in the growth conditions has been found to reduce the exchange coupling by nearly a factor of two.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 384: Symposium L – Magnetic Ultrathin films, Multilayers and Surfaces , 1995 , 131
Copyright
Copyright © Materials Research Society 1995

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

(1) Unguris, J., Celotta, R.J., and Pierce, D.T., Phys.Rev.Lett. 67,140 (1991); ibid,69,1125 (1992).Google Scholar
(2) Pierce, D.T., Stroscio, J.A., Unguris, J., and Celotta, R.J., Phys.Rev. B49,14564 (1994).Google Scholar
(3) Pierce, D.T., Unguris, J., and Celotta, R.J. in Ultrathin Magnetic Structures II, edited by Heinrich, B. and Bland, J.A.C. (Springer-Verlag, Berlin, 1994), p.117.Google Scholar
(4) Stroscio, J.A., Pierce, D.T., Unguris, J., and Celotta, R.J., J.Vac.Sci.Technol. B12,1789 (1994).Google Scholar
(5) Heinrich, B. and Cochran, J.F., Advances in Physics,42,523 (1993).Google Scholar
(6) Arrott, A.S. and Heinrich, B., J.Appl.Phys. 52,2113 (1981).Google Scholar
(7) Escudier, P., Ann.Phys. 9,125 (1975): H.Gengnagel and U.Hofmann, phys.stat.sol.29,91 (1968).Google Scholar
(8) Cochran, J.F. in Ultrathin Magnetic Structures II, edited by Heinrich, B. and Bland, J.A.C. (Springer-Verlag, Berlin, 1994), p222 Google Scholar
(9) Cochran, J.F.. Unpublished.Google Scholar
(10) Camley, R.E. and Mills, D.L., Phys.Rev. B18,4821 (1978).Google Scholar
(11) Stoeffler, D. and Gautier, F., Phys.Rev. B44,10389 (1991); J.Magn.Magn.Mater.104-107,1819 (1992).Google Scholar
(12) Sandercock, J.R. in Topics in Applied Physics Volume 51: Light Scattering in Solids III, edited by Cardona, M. and Gantherodt, G. (Springer-Verlag, Berlin, 1982), p.173.Google Scholar
(13) Grinberg, P. in Topics in Applied Physics Volume 66: Light Scattering in Solids V, edited by Cardona, M. and Gantherodt, G. (Springer-Verlag, Berlin, 1989), p.303.Google Scholar
(14) Bader, S.D. and Erskine, J.L. in Ultrathin Magnetic Structures II, edited by Heinrich, B. and Bland, J.A.C. (Springer-Verlag, Berlin, 1994), p.297.Google Scholar
(15) Folkerts, W. and Purcell, S.T., J.Magn.Magn.Mat. 111,306 (1992).Google Scholar
(16) Cochran, J.F., J.Magn.Magn.Mat. To be published.Google Scholar
(17) Heinrich, B. in Ultrathin Magnetic Structures II, edited by Heinrich, B. and Bland, J.A.C. (Springer-Verlag, Berlin, 1994), p.195.Google Scholar
(18) Jonge, W.J.M. de, Bloemen, P.J.H., and Broeder, F.J.A.den in Ultrathin Magnetic Structures I, edited by Bland, J.A.C. and Heinrich, B. (Springer-Verlag, Berlin, 1994), Table2,7, p.79.Google Scholar