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Rotation of the pinning direction in the exchange bias training effect in polycrystalline NiFe/FeMn bilayers

Qiu, X.P, Yang, D.Z, Zhou, S.M, Chantrell, R.W., O'Grady, K., Du, J., Bai, X.J, Sun, L. and Nowak, U. (2008) Rotation of the pinning direction in the exchange bias training effect in polycrystalline NiFe/FeMn bilayers. Physical Review Letters. 147207. pp. 1-4. ISSN 1079-7114

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Abstract

For polycrystalline NiFe/FeMn bilayers, we have observed and quantified the rotation of the pinning direction in the exchange bias training and recovery effects. During consecutive hysteresis loops, the rotation of the pinning direction strongly depends on the magnetization reversal mechanism of the ferromagnet layer. The interfacial uncompensated magnetic moment of antiferromagnetic grains may be irreversibly switched and rotated when the magnetization reversal process of the ferromagnet layer is accompanied by domain wall motion and domain rotation, respectively.

Item Type: Article
Copyright, Publisher and Additional Information: © 2008 American Physical Society. This is an author produced version of a paper published in Physical Review Letters. Uploaded in accordance with the publisher's self archiving policy.
Academic Units: The University of York > Physics (York)
The University of York > Computer Science (York)
Depositing User: Repository Administrator York
Date Deposited: 10 Nov 2008 17:28
Last Modified: 23 Mar 2014 02:03
Published Version: http://dx.doi.org/10.1103/PhysRevLett.101.147207
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/4865

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