The effect of the interdot magnetostatic interaction on the magnetization reversal due to the ``nucleation'' and ``annihilation'' of magnetic vortices in arrays of ferromagnetic submicron circular dots has been investigated experimentally and theoretically. The magnetostatic interaction plays an important role in magnetization reversal for the arrays with a small interdot distance, leading to decreases in the vortex nucleation and annihilation fields, and an increase in initial susceptibility.
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Novosad et al. (2002) studied this question.
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