Nonlinear response of magnetization obeying inertial dynamics to superimposed dc and ac fields and dynamic magnetic hysteresis

Autor: Sergei V. Titov, William J. Dowling, Anton S. Titov, Andrey S. Fedorov
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: AIP Advances, Vol 14, Iss 3, Pp 035216-035216-8 (2024)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/5.0191413
Popis: The nonlinear ac stationary responses of magnetization and the dynamic magnetic hysteresis of ferromagnetic particles with uniaxial anisotropy acted on by both external dc and ac magnetic fields are evaluated by employing the inertial Landau–Lifshitz–Gilbert equation. Analytical expressions are obtained for the components of the second- and third-order nonlinear susceptibility tensors using the perturbation method. The dynamic nonlinear susceptibility strongly depends on the dc field strength. The effect of inertia on the area and slope of the dynamic magnetic hysteresis loop is demonstrated. In addition to nutation resonance, the main nonlinear effects previously observed in the ferromagnetic resonance region (frequency doubling and appearance of weak subharmonic resonance peaks) are predicted in the nutation resonance frequency region.
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