Cooling-field dependence of asymmetric reversal modes for ferromagnetic/antiferromagnetic multilayers

B. Beckmann, K. D. Usadel, and U. Nowak
Phys. Rev. B 74, 054431 – Published 28 August 2006

Abstract

A numerical investigation of exchange coupled ferromagnetic/antiferromagnetic multilayers with a twinned crystal structure for the antiferromagnet is presented. Motivated by recent experimental findings we focus on the influence of the directions of the magnetic field during the initial cooling procedure and during the hysteresis. Upon variation of these directions the ferromagnet displays different reversal modes or even an asymmetric reversal with different kinds of reversal mechanisms for the decreasing and increasing branch of a single hysteresis loop. These findings can be explained within the context of the domain state model for exchange bias.

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  • Received 13 December 2005

DOI:https://doi.org/10.1103/PhysRevB.74.054431

©2006 American Physical Society

Authors & Affiliations

B. Beckmann and K. D. Usadel

  • Fachbereich Physik, Universität Duisburg-Essen, Lotharstrasse 1, 47048 Duisburg, Germany

U. Nowak

  • Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom

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Issue

Vol. 74, Iss. 5 — 1 August 2006

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