Inertial Dynamics of Uniform Magnetization in Ferromagnetic Resonance
In this paper,the dynamics of magnetization in ferromagnets is studied by using the inertial Landau-Lifshitz-Gilbert equa-tion.Under the same initial conditions,the equation is analyzed theoretically and simulated numerically by applying two different currents.The results show that when two different currents are given,the overall trend of pole angle,pole angular velocity,direction angle and direction angular velocity vibration tends to be stable with time,and is not affected by different applied currents.In addi-tion,when the current along the z-axis is applied,it is found that the precession oscillation of each magnetization component caused by the inertia term is almost a straight line on a long time scale.Finally,using the applied sinusoidal time-dependent current,it is found that besides the normal precession resonance peak,there is also nutation resonance peak caused by inertial effect.
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