Noise-induced stability of the oscillatory mode of a system of magnetic dipoles

On the basis of numerical analysis, the dynamics of the magnetic moment of a ring system of ball-shaped bodies is studied under its excitation by a harmonic magnetic field and an additional noise signal. A stochastic effect is discovered, in which the system passes, under the action of noise, to unstable (in the absence of an additional excitation) oscillatory mode of the total magnetic moment with a frequency differing from the harmonic field frequency. The possibility of controlling the noise signal intensity, which is necessary for the realization of this effect, is demonstrated.