Abstract
Ferromagnetic resonance(FMR) study on sputtered Ni80Fe20 with various thickness from 2 nm to 38.5 nm sandwiched by Ta has been made systematically with different dc magnetic field orientations. The FMR spectra were analyzed and fitted theoretically with Laudau-Lifshitz-Gilbert equation. The variations of magnetization, magnetic anisotropy up to fourth-order term with thickness of samples were obtained. The analysis of the FMR peak-to-peak linewidth was made by the homogenous and inhomogeous contributions, and the damping constants of samples were calculated. The experimental data were fitted by theoretical model and there were some abnormal changes in the magnetic parameters with the sample thickness. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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