Magneto-optical study of magnetization reversal asymmetry in exchange bias
Tillmanns, A. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches)
Oertker, S. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches)
Beschoten, Bernd (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches)
Güntherodt, G. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches)
Leighton, C. (University of California, San Diego. Department of Physics)
Schuller, Ivan K. (University of California, San Diego. Department of Physics)
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física)
American Physical Society

Data:	2006
Resum:	The asymmetric magnetization reversal in exchange biased Fe/MnF2 involves coherent (Stoner-Wohlfarth) magnetization rotation into an intermediate, stable state perpendicular to the applied field. We provide here the experimentally tested analytical conditions for the unambiguous observation of both longitudinal and transverse magnetization components using the magneto-optical Kerr effect. This provides a fast and powerful probe of coherent magnetization reversal as well as its chirality. Surprisingly, the sign and asymmetry of the transverse magnetization component of exchange biased, low-anisotropy MnF2 and high-anisotropy FeF2 change with the angle between cooling and measurement fields.
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Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Magnetooptic ; Kerr effects ; Polarization ; Magnetization reversals ; Magnetic hysteresis ; Chiral symmetries ; Exchange interactions ; Ferromagnetism ; Magnetic fields ; Magnetization measurement
Publicat a:	Applied physics letters, Vol. 89, Issue 20 (November 2006) , p. 202512, ISSN 1077-3118

DOI: 10.1063/1.2392283

4 p, 394.7 KB

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