Bifurcation Magnetic Resonance in Type (100) Films
upon In-Plane Magnetization

D. I. Sementsov and A. M. Shutyi*

Ulyanovsk State University, ul. L’va Tolstogo 42, Ul’yanovsk, 432700 Russia

* e-mail: shuty@mail.ru

Received April 14, 2011; in final form, October 1, 2011

Abstract—The magnetization dynamics in (100) single-crystal films with a cubic anisotropy has been studied
by numerical simulation. It has been shown that the additional (bifurcation) resonance caused by the bistability,
i.e., two closely spaced equilibrium magnetization states, appears upon in-plane magnetization along the hard
axis. The change in the resonance region and the corresponding dynamic regimes with a variation in the RF
field or with a small detuning of the magnetizing field has been investigated. The regular and chaotic precession
regimes near the bifurcation resonance have been revealed. The states of dynamic bistability have been found.

DOI: 10.1134/S1063783412040245

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