Recently developed techniques to find the eigenmodes of a ferromagnetic particle of arbitrary shape, as well as the absorption in the presence of an inhomogeneous radio-frequency field, are extended to treat infinite lattices of such particles. The method is applied to analyze the results of recent ferromagnetic resonance experiments and yields substantially good agreement between theory and experiment.

• Received 2 January 2007

DOI:https://doi.org/10.1103/PhysRevB.75.174408