Title:
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Highly asymmetric magnetic behavior in exchange biased systems induced by noncollinear field cooling
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Author:
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Jimenez, E.; Camarero, Julio; Sort Viñas, Jordi; Nogués, Josep; Hoffmann, Axel; Miranda, R.; Teran, F. J.; Perna, Paolo; Garcia-Martin, J. M.; Dieny, B.; Miranda, R.; American Physical Society
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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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A detailed study of the angular dependence of the magnetization reversal in polycrystalline ferromagnetic (FM)/antiferromagnetic Co/IrMn bilayers with noncollinear FM and unidirectional anisotropies shows a peculiar asymmetric magnetic behavior. The anisotropy configuration is set via a field cooling (FC) procedure with the magnetic field misaligned with respect to the easy magnetization direction of the FM layer. Different magnetization reversal modes are observed for either positive or negative angles with respect to the FC direction. The angular dependence of both coercivity and exchange bias also clearly displays the broken symmetry of the induced noncollinearity. Our findings are reproduced with a modified Stoner-Wohlfarth model including the induced anisotropy configuration. Our results highlight the importance of the relative angle between anisotropies in exchange bias systems, opening a new path for the tailoring of their magnetic properties. |
Subject(s):
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-Magnetic anisotropy -Ferromagnetism -Magnetization reversals -Exchange interactions -Coercive force -Magnetic hysteresis -Antiferromagnetism -Atomic force microscopy -Magnetic domains -Polycrystals |
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/116003
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