Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface
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 th...
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2010
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| Online Access: | http://eprints.um.edu.my/8231/ http://www.sciencedirect.com/science/article/pii/S0304885309002893 |
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| author | Chew, Khian Hooi Stamps, R.L. |
| author_facet | Chew, Khian Hooi Stamps, R.L. |
| author_sort | Chew, Khian Hooi |
| building | UM Library |
| collection | Institutional Repository |
| content_provider | Universiti Malaya |
| content_source | UM Research Repository |
| continent | Asia |
| country | Malaysia |
| description | 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. |
| format | Article |
| id | my.um.eprints-8231 |
| institution | Universiti Malaya |
| publishDate | 2010 |
| record_format | eprints |
| spelling | my.um.eprints-82312019-08-27T07:39:15Z http://eprints.um.edu.my/8231/ Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface Chew, Khian Hooi Stamps, R.L. QC Physics 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. 2010 Article PeerReviewed 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 <https://doi.org/10.1016/j.jmmm.2009.03.034>. http://www.sciencedirect.com/science/article/pii/S0304885309002893 10.1016/j.jmmm.2009.03.034 |
| spellingShingle | QC Physics Chew, Khian Hooi Stamps, R.L. Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface |
| title | Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface |
| title_full | Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface |
| title_fullStr | Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface |
| title_full_unstemmed | Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface |
| title_short | Influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface |
| title_sort | influence of an interface layer on the effective coupling at a ferromagnet/antiferromagnet interface |
| topic | QC Physics |
| url | http://eprints.um.edu.my/8231/ http://www.sciencedirect.com/science/article/pii/S0304885309002893 |
| url_provider | http://eprints.um.edu.my/ |