Magnetization Reversal in Ferromagnetic Film Through Solitons by Electromagnetic Field

Details Magnetization Reversal in Ferromagnetic Film Through Solitons by Electromagnetic Field Magnetization Reversal in Ferromagnetic Film Through Solitons by Electromagnetic Field

2001-07-25

arxiv.org/abs/nlin/0107058v1

Nonlinear Sciences

Exactly Solvable and Integrable Systems

RevTex format;11 pages;2 figures;submitted to Physical Review B(Rapid Communications)

Scientific paper

We study the reversal of magnetization in an isotropic ferromagnetic film free from charges by exposing it to a circularly polarized electromagnetic (EM) field. The magnetization excitations obtained in the form of line and lump solitons of the completely integrable modified KP-II equation which is derived using a reductive perturbation method from the set of coupled Landau-Lifshitz and Maxwell equations. It is observed that when the polarization of the EM-field is reversed followed by a rotation, for every $ {\pi \over 2} $-degrees, the magnetization is reversed.

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