Magneto-optical Kerr effect in conical diffraction geometry of micron-size Fe3Si wire array

Magneto-optical Kerr effect for micron-size ferromagnetic Fe₃ Si wires deposited on silicon substrate was investigated in a conical diffraction geometry with TM polarized light and applied magnetic field parallel to the plane of incidence. The diffracted intensities were found to be dependent on the orientation of the magnetization vector as with the transverse Kerr effect. The amplitude of the hysteresis loops depends on both the order numbers and the angle of incidence. A model based on the dipole light re-emission qualitatively interprets the experimental data