Abstract
The effect of an in-plane induced uniaxial anisotropy on the magnetic vortex gyrotropic frequency is investigated by micromagnetic simulations, exemplified by the inverse magnetostriction in a uniaxially stressed circular dot. It is found that the gyrotropic frequency decreases with increasing magnitude of the induced uniaxial anisotropy. The results are analyzed by extracting the restoring forces from the vortex dynamical potential-well. The dominant contribution to the decreasing trend in frequency is found to be due to a softening of both the restoring force spring constants. This work offers an alternative method to control the gyrotropic frequency of a magnetic vortex.
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