Analysis of switching times of inhomogeneous magnetization processes in thin platelets

High-density magnetic recording requires large switching fields and short sub-ns switching times of single-domain particles. Switching times are shown to depend on sample size and geometry, the magnetic material parameters and type and strength of applied fields. Numerical solutions of the Landau–Lifshitz–Gilbert equation show a minimum of the switching times as a function of the damping parameter. With increasing magnetic field an increase of switching times is observed for small damping constants and a decrease for large ones.