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Abstract
A model of ferromagnetic resonance in inhomogeneous films is described, which includes interactions in a mean-field approximation. The mean-field model yields linewidth values that span the range from intrinsic linewidth for strong interactions to fully broadened local resonance linewidths for weak interactions. For weak inhomogeneity, the mean-field model does not follow the quadratic dependence of broadening on inhomogeneity predicted by the two-magnon model. For weakly interacting regions with strong inhomogeneity, the mean-field model fills a gap in the modeling of ferromagnetic resonance spectra where only computationally intensive models have been available previously.
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