Strong interlayer coupling in CoO/NiO antiferromagnetic superlattices

M. J. Carey; A. E. Berkowitz; J. A. Borchers; R. W. Erwin

doi:10.1103/PhysRevB.47.9952

Strong interlayer coupling in CoO/NiO antiferromagnetic superlattices

M. J. Carey, A. E. Berkowitz, J. A. Borchers, and R. W. Erwin

Phys. Rev. B 47, 9952 – Published 15 April 1993

Abstract

A strong interlayer-exchange interaction is observed in short-repeat-distance CoO/NiO superlattices. This was investigated by measuring the exchange-anisotropy properties of superlattice CoO/NiO/ ${Ni}_{81}$ ${Fe}_{19}$ exchange couples and by examining NiO/CoO superlattices with neutron diffraction. Short-repeat-distance superlattices show a single ordering temperature which depends only on the [CoO]:[NiO] ratio. The magnetocrystalline anisotropy of the monoxide layers is strongly influenced by the interlayer coupling.

Received 29 September 1992

DOI:https://doi.org/10.1103/PhysRevB.47.9952

Authors & Affiliations

M. J. Carey and A. E. Berkowitz

Department of Physics and Center for Magnetic Recording Research, University of California at San Diego, La Jolla, California 92093-0401

J. A. Borchers and R. W. Erwin

National Institute of Standards and Technology, Gaithersburg, Maryland 20899

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Vol. 47, Iss. 15 — 15 April 1993

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