New effects in light scattering in disordered media and coherent backscattering cone: Systems of magnetic particles

Single and multiple scattering of light by magnetic particles and their imp lications to the coherent backscattering effect are reported. Single;scatte ring of light by small magnetic particles presents unusual features such as forward-backward asymmetry and resonance effects. In multiple scattering, this leads to a global decrease in the localization parameter k l*, which e xhibits an oscillatory dependence on the scatterer magnetic permeability. B y considering magnetic scatterers following a Curie-Weiss susceptibility la w, we suggest that kl* can be tuned by Varying the temperature.