Optical nonlinearities induced in a magnetic liquid by an alternating magnetic field
Raikher Yu. L., Burylov S. V. , Stepanov V. I.
The spectral composition of the oscillations in the orientation of particles in a magnetic liquid in a large-amplitude alternating field has been found. The results show that the superparamagnetism of the particles gives rise to some characteristic structural features in the intensity of polarized light transmitted through the magnetic liquid. The structural features consist of minima in the field dependence of harmonic amplitudes.