Reversal dynamics of interacting circular nanomagnets

The Gilbert equation of motion is solved to investigate the reversal dynami cs of interacting circular NiFe nanoelements. During magnetization reversal of isolated circular nanomagnets inhomogeneous transient states are formed . The exchange energy of the intermediates states, which is a measure for t he uniformity of the magnetization, increases with decreasing Gilbert dampi ng constant or increasing applied field. The magnetostatic interactions lea d to a further enhancement of the nonuniformity during reversal of interact ing nanomagnets.