Nonlinear magnetization dynamics under circularly polarized field.
Exact analytical results are presented for the nonlinear large motion of the magnetization vector in a body with uniaxial symmetry subject to a circularly polarized field. The absence of chaos, the existence of pure time-harmonic magnetization modes with no generation of higher-order harmonics, and the existence of quasiperiodic magnetization modes with spontaneous breaking of the rotational symmetry are proven. Application to ferromagnetic resonance and connection with the Stoner-Wohlfarth model are discussed.
Bertotti
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Istituto Elettrontecnico Nazioale Galileo Ferraris, Torino, Italy.
Serpico
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Mayergoyz
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