Intrinsic nonlinear ferromagnetic relaxation in thin metallic films.
We propose an intrinsic mechanism for ferromagnetic relaxation in thin films that can dominate competing linear mechanisms even for rapidly relaxing metals. In particular, we use an analytic theory of four-magnon scattering to demonstrate rapid decay for technologically important systems involving high moment materials subject to large rotations. A micromagnetic simulation is used to verify the results.
School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA. adobin@physics.umn.edu
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