Abstract:
Different physical and chemical methods were used to prepare II–VI based semimagnetic semiconductor
nanocrystals. A study of magneto-optical Faraday effect in the nanocrystals revealed its enhancement as
compared with bulk crystals. It is explained in framework of increase in the oscillator strength of exciton
transitions and to the difference between these strengths in an external magnetic field. It was observed almost
linear dependence of the Faraday rotation as function of magnetic field strength for nanocrystals at
liquid helium temperature in contrast to the dependence with saturation in bulk case and changes in process
of a transition of the semimagnetic nanocrystals from the paramagnetic state to a spin glass state.
