Stochastic resonance in a system of ferromagnetic particles

TL;DR

This paper demonstrates that a system of ferromagnetic particles exhibits stochastic resonance under a linearly polarized magnetic field, with analysis showing similarities to other known stochastic resonance systems.

Contribution

It introduces the occurrence of stochastic resonance in ferromagnetic particle systems and provides analytical calculations of key dynamical quantities.

Findings

Stochastic resonance observed in ferromagnetic particle dispersion

Power spectrum and residence time distributions analyzed

Behavior aligns with other stochastic resonance systems

Abstract

We show that a dispersion of monodomain ferromagnetic particles in a solid phase exhibits stochastic resonance when a driven linearly polarized magnetic field is applied. By using an adiabatic approach, we calculate the power spectrum, the distribution of residence times and the mean first passage time. The behavior of these quantities is similar to their corresponding ones in other systems in which stochastic resonance has also been observed.