The components of the dielectric tensor deduced from the magneto-optical measurements for Fe–Ni alloy series

Abstract Polar Kerr rotation, magneto-circular dichroism and reflectivity were measured on optical clean surfaces of 30–80% Ni–Fe alloy plates in the energy range 0.5–3.5 eV. The diagonal and non-diagonal components of the dielectric function tensor, exx and exy, were calculated from experimental values. The energy dependence of e was analyzed by intraband effects.