Abstract
AbstractDynamic properties of magnetic nanostructures have recently been intensively studied due to their potential application in high density perpendicular recording media or magnetic sensors. Permalloy nanostructured line arrays have been prepared using interference lithography. The film thickness is of 50 nm for different lattice periods. The anisotropy field can be investigated by various techniques. One of these techniques is the ferromagnetic resonance spectroscopy (FMR) due to the fact that the resonance field depends directly on the anisotropy. Ferromagnetic resonance measurements have been carried out at as a function of frequency from 1 to 10 GHz for magnetic fields up to 10 kA/m. The sample was placed in coplanar waveguide with the sample plane parallel to the magnetic field. The frequency dependence of the resonance field can be used to calculate the magnetization saturation and anisotropy field under suitable approximations. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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