Abstract
A two-dimensional, dynamic, micromagnetic model of a thin strip of permalloy is described and used to model the magnetization dynamics of the strip as it is subjected to a transverse step field. The numerical results are compared to experimental data. The experimental precession frequency is matched by varying Hk, the longitudinal, uniaxial, magnetocrystalline anisotropy field. The damping is matched by varying α, the phenomenological damping parameter in the LLG equation. A good fit to the data was obtained with a single damping constant of α=0.013.
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