Abstract
A theoretical analysis of the static and dynamic magnetic susceptibilities of a frozen moderately concentrated ferrocolloid is presented. The freezing of the fluid is assumed to take place in the presence of a constant external magnetic field. The steric and dipole-dipole interactions between ferroparticles are taken into account. We have studied the situations when current magnetic field is parallel and normal to the magnetic field applied during freezing. The influence of interparticle interaction on the real and imaginary parts of initial susceptibility is examined. The analysis of a stochastic resonance in this system is presented and the influence of interparticle interaction and field applied during freezing on signal-noise ratio is estimated.
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