Numerical Simulation Study of Magnetization Precession Dynamics in Submicron Elliptical Ni80Fe20 Thin Film Elements

In this paper, the authors investigated the dynamic magnetic response of submicron elliptical Ni
₈₀
Fe
₂₀
thin film elements by using micromagnetic modeling. It was found that coherent rotation and magnetization ringing in Ni
₈₀
Fe
₂₀
elements can be controlled by adjusting the axis-ratio of the ellipse, the thickness, and the angle of the magnetic field pulse. Further studies indicate that uniformity in the distribution of the magnetization is improved by reducing the length of the short axis and reducing the thickness of the thin film. These changes effectively suppress the magnetization ringing.