Comparative study of optical and magneto-optical properties of normal, disordered, and inverse spinel-type oxides

摘要: , and thin films were fabricated by pulsed laser deposition at high low temperatures resulting in crystalline single-phase normal, inverse, as well disordered spinel oxide with smooth surface morphology. The dielectric function, determined spectroscopic ellipsometry a wide spectral range from 0.5 to 8.5 eV, is compared the magneto-optical response of tensor, investigated Kerr effect spectroscopy 1.7 5.5 eV an applied magnetic field 1.7 T. Crystal field, inter-valence, inter-sublattice charge transfer transitions, transitions metal cation 3d or 4s bands are identified both principal diagonal elements magneto-optically active off-diagonal tensor. Depending on degree disorder, local symmetry distortion, found be strongest for crystal quality inverse spinels normal structure, contrary first principle studies . results presented provide basis deeper understanding light–matter interaction this material system that vital importance device-related phenomena engineering.