The magnetic anisotropy of needle-like single-crystal MnSb inclusions in the InSb matrix was determined and studied in the temperature range 5 – 350 K. In granular InSb-MnSb samples a power-law dependence of the anisotropy constant K(T) on the saturation magnetization MS(T) is observed in the temperature range 5 – 350 K with an exponent n = 3.2 ± 0.4 in accordance with the theories developed by Akulov, Zener, and Callens.

We studied thin films of the Dirac semi-metal Cd3As2, about 100 nm thickness, made by vacuum thermal evaporation from cadmium arsenide single crystals. The temperature and magnetic field dependences of the electrical resistance were measured, which indicate the presence of a superconducting transition at a temperature between 0.2 to 0.6 K.