Magneto-Optical Spectroscopy of GaSb–MnSb Composites

Polycrystalline samples of (GaSb)100 – x(MnSb)x composites with x = 69.2, 52.0 and 31.7 mol %, MnSb, Mn2Sb compounds are synthesized and their magneto-optical properties are studied in the equatorial (transverse) geometry of the Kerr effect. The difference between the magneto-optical spectra for related MnSb and Mn2Sb compounds is shown. The anomalous temperature behavior of the magneto-optical signal in the composites and MnSb upon a drop in temperature is associated with redistribution of the occupation of d-states with opposite spin indices.