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Magnetic Exchange Coupling in Asymmetric Trilayers of Co/Cr/Fe

Published online by Cambridge University Press:  15 February 2011

K. Theis-BrÖhl ,
R. Scheidt ,
TH. Zeidler ,
F. Schreiber ,
H. Zabel ,
TH. Mathieu ,
CH. Mathieu  and
B. Hillebrands
K. Theis-BrÖhl
Affiliation:
Ruhr-Universität Bochum, D-44780 Bochum, Germany
R. Scheidt
Affiliation:
Ruhr-Universität Bochum, D-44780 Bochum, Germany
TH. Zeidler
Affiliation:
Ruhr-Universität Bochum, D-44780 Bochum, Germany
F. Schreiber
Affiliation:
Ruhr-Universität Bochum, D-44780 Bochum, Germany
H. Zabel
Affiliation:
Ruhr-Universität Bochum, D-44780 Bochum, Germany
TH. Mathieu
Affiliation:
Universität Karlsruhe, Engesser Str.7, D-76128 Karlsruhe, Germany
CH. Mathieu
Affiliation:
Universität Karlsruhe, Engesser Str.7, D-76128 Karlsruhe, Germany
B. Hillebrands
Affiliation:
Universität Karlsruhe, Engesser Str.7, D-76128 Karlsruhe, Germany
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Abstract

We present first results of anisotropy and exchange coupling studies of a system with two different magnetic layers (Fe and Co) separated by a nonmagnetic Cr spacer. For the magnetic measurements we used the longitudinal magneto-optical Kerr effect and ferromagnetic resonance. The hysteresis data obtained from the trilayer were fit to a theoretical model which contains both bilinear and biquadratic coupling. The in-plane anisotropy was found to be four-fold with the same easy-axis orientation for both the Fe and the Co layers. An analysis of the easy-axishysteresis loops indicates long period oscillatory coupling and also suggests a short period coupling.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 384: Symposium L – Magnetic Ultrathin films, Multilayers and Surfaces , 1995 , 165
Copyright
Copyright © Materials Research Society 1995

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References

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