Radiation Induced Landau-Lifshitz-Gilbert Damping in Ferromagnets

Details Radiation Induced Landau-Lifshitz-Gilbert Damping in Ferromagnets Radiation Induced Landau-Lifshitz-Gilbert Damping in Ferromagnets

2002-02-11

arxiv.org/abs/cond-mat/0202181v1

Physics

Condensed Matter

Statistical Mechanics

3 pages ReVTeX 4 format

Scientific paper

The Landau-Lifshitz-Gilbert damping coefficient employed in the analysis of spin wave ferromagnetic resonance is related to the electrical conductivity of the sample. The changing magnetization (with time) radiates electromagnetic fields. The electromagnetic energy is then absorbed by the sample and the resulting heating effect describes magnetic dissipative damping. The ferromagnetic resonance relaxation rate theoretically depends on the geometry (shape and size) of the sample as well as temperature in agreement with experiment.

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