Kerr detected time average of magnetization precession in ferromagnetic resonance

Meckenstock, R.; Müller, M.; Spoddig, D.
March 2005
Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p112506
Academic Journal
In ferromagnetic resonance (FMR), the magnetization precesses around its equilibrium orientation. A conventional magneto-optical Kerr effect (MOKE) setup, was used to detect the time average of the precession of the magnetization. The microwave power was adjusted to the linear precession regime. The different components of the high-frequency magnetization can be discriminated by the choice of the plane of incidence of the light. The use of a conventional FMR cavity setup ensures well defined homogeneous excitation of the magnetization and allows angle dependent measurements. A further benefit of the MOKE detection is the spatial resolution for FMR on a micrometer scale. The samples under investigation were (001)-Fe films on ZnSe covered by ZnSe, which were characterized by conventional angle and frequency dependent FMR as well.


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