Magneto-optical study of magnetization reversal asymmetry in exchange bias

Details Magneto-optical study of magnetization reversal asymmetry in exchange bias Magneto-optical study of magnetization reversal asymmetry in exchange bias

2005-08-26

arxiv.org/abs/cond-mat/0508635v2

Appl. Phys. Lett. 89, 202512 (2006)

Physics

Condensed Matter

Materials Science

9 pages, 3 figures

Scientific paper

10.1063/1.2392283

The asymmetric magnetization reversal in exchange biased Fe/MnF$_{2}$ involves coherent (Stoner-Wohlfarth) magnetization rotation into an intermediate, stable state perpendicular to the applied field. We provide here 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 Fe/MnF$_{2}$ change with the angle between cooling and measurement fields.

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