MAGNETOOPTICAL EFFECTS INDUCED BY EXCHANGE INTERACTION IN DILUTED MAGNETIC SEMICONDUCTORS

The magnetooptical effects of magnetoreflection, magnetoabsorption and the Faraday rotation in the diluted magnetic semiconductors (DMS) Cd1 -xMnxTe, Cd1-xFexTe, Pb1-xMnxI2 have been investigated. For CdFeTe all oy the range of temperature independence of spin splitting and anisotr opic Faraday effect have been found and interpreted by Van Vleck param agnetism in Fe-based DMS. Results received for different DMS have been analyzed from the point of view of the relationship between constants of s, p-d exchange interaction, a degree of the Faraday rotation enha ncement and oscillator strength of excitonic transition. It is suppose d that the reduction of the exchange interaction with simultaneous inc reasing of the Faraday effect in Pb1-xMnxI2 crystals is due to the lay er structure of a lattice of this type of DMS.