Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface

Chew, Khian Hooi and Stamps, R.L. (2010) Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface. Journal of Magnetism and Magnetic Materials, 322 (9-12). pp. 1327-1329. ISSN 0304-8853, DOI https://doi.org/10.1016/j.jmmm.2009.03.034.

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

We examine the exchange anisotropy induced at a ferromagnetic/antiferromagnetic interface when an antiferromagnetic interface layer exists. We show that competition between exchange couplings in the interface layer can result in a ferrimagnetic-like compensation point. This leads to a reversal of the effective field acting on the ferromagnet, and a consequent sign change of the exchange bias for temperatures near the Neel temperature of the antiferromagnet. A surprising result is the sensitive dependence of the compensation point on exchange interactions. Even minute modifications of the exchange interactions near the interface can result in a reversal of the effective field, provided certain conditions are met. (C) 2009 Elsevier B.V. All rights reserved.

Item Type: Article
Funders: UNSPECIFIED
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Exchange bias, Interface magnetic property, Interface effect, Exchange bias
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 29 Jul 2013 00:34
Last Modified: 27 Aug 2019 07:39
URI: http://eprints.um.edu.my/id/eprint/8231

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