Title:
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Role of anisotropy configuration in exchange-biased systems
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Author:
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Jiménez, E.; Camarero, Julio; Perna, Paolo; Mikuszeit, F.; Teran, F. J.; Sort Viñas, Jordi; Nogués, Josep; García-Martín, J. M.; Hoffmann, Axel; Dieny, B.; Miranda, R.
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Abstract:
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This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. |
Abstract:
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We present a systematic study of the anisotropy configuration effects on the magnetic properties of exchange-biased ferromagnetic/antiferromagnetic (FM/AFM) Co/IrMn bilayers. The interfacial unidirectional anisotropy is set extrinsically via a field cooling procedure with the magnetic field misaligned by an angle bFC with respect to the intrinsic FM uniaxial anisotropy. High resolution angular dependence in-plane resolved Kerr magnetometry measurements have been performed for three different anisotropy arrangements, including collinear bFC =0º and two opposite noncollinear cases. The symmetry breaking of the induced noncollinear configurations results in a peculiar nonsymmetric magnetic behavior of the angular dependence of magnetization reversal, coercivity, and exchange bias. The experimental results are well reproduced without any fitting parameter by using a simple model including the induced anisotropy configuration. Our finding highlights the importance of the relative angle between anisotropies in order to properly account for the magnetic properties of exchange-biased FM/AFM systems. |
Subject(s):
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-Matèria condensada |
Rights:
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open access
Tots els drets reservats.
https://rightsstatements.org/vocab/InC/1.0/ |
Document type:
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Article |
Published by:
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Share:
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Uri:
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https://ddd.uab.cat/record/107301
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