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Temperature Dependence of Strong Exchange Coupling in Ferrite Heterostructures

Published online by Cambridge University Press:  15 February 2011

Y. Suzuki ,
R.B. Van Dover  and
R.J. Felder
Y. Suzuki
Affiliation:
Dept. Materials Science and Engineering, Cornell University, Ithaca, NY 14853
R.B. Van Dover
Affiliation:
Bell Labs, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
R.J. Felder
Affiliation:
Bell Labs, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
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Abstract

Single crystalline spinel structure ferrite thin film bilayers exhibit nearly ideal exchange coupling at room temperature. In these bilayers, the blocking temperature is only limited by the Curie temperature of the (Mn,Zn)Fe2O4. Up to the Curie temperature of the soft (Mn,Zn)Fe2O4 layer, the magnetization loops indicate that exchange anisotropy dominates the magnetization of the soft layer up to magnetic fields on the order of the coercive field of the hard CoFe2O4layer.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 475: Symposium M – Magnetic Ultrathin Films, Multilayers, and Surfaces – 1997 , 1997 , 587
Copyright
Copyright © Materials Research Society 1997

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References

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