Reversal dynamics of interacting circular nanomagnets

D. Suess, T. Schrefl, J. Fidler and V. D. Tsiantos

IEEE Trans Magn., 37 (2001) 1960-1962.

The Gilbert equation of motion is solved to investigate the reversal dynamics 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 the uniformity of the magnetization, increases with decreasing Gilbert damping constant or increasing applied field. The magnetostatic interac-tions lead to a further enhancement of the nonuniformity during reversal of interacting nanomagnets.

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Feb. 13, 2001