2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/23776The strongly damping-dependent nonlinear dynamical response of classical superparamagnets is investigated by means of an analytical approach. Using rigorous balance equations for the spin occupation numbers a simple approximate expression is derived for the nonlinear susceptibility. The results are in good agreement with those obtained from the exact (continued-fraction) solution of the Fokker-Planck equation. The formula obtained could be of assistance in the modelling of the experimental data and the determination of the damping coefficient in superparamagnets.7 PR pages, 2 figuresStatistical MechanicsSoft Condensed Mattertext