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Surface roughness induced extrinsic damping in thin magnetic films

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PHYSICAL REVIEW LETTERS
卷 92, 期 25, 页码 -

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AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.92.257204

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The ferromagnetic relaxation caused by the surface roughness induced 2-magnon scattering is investigated. Approximate analytical solution predicts nonexponential decay of the uniform precession excitations of the form exp{-\t/tau(3/2)\(3/2)}. This behavior as well as the dependence of the decay time tau(3/2) on roughness parameters are confirmed by micromagnetic simulations.

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