Temperature-dependent dynamical behavior of nanoparticles as probed by ferromagnetic resonance using Landau-Lifshitz-Gilbert dynamics in a classical spin model

The dynamical response of nanoparticles as probed by ferromagnetic resonance (FMR) is studied within a classical spin model using Landau-Lifshitz-Gilbert dynamics. The FMR signal is calculated numerically for different temperatures. The dependence of both the shift of the resonance signal and the linewidth on temperature is obtained, yielding information about the microscopic parameters of the particles.