Optical Properties of HgMgMnTe Crystals

Optical properties of new semimagnetic semiconductors of Hg$\text{}_{1-x-y}$Mg$\text{}_{x}$Mn$\text{}_{y}$Te (x < 0.10, y < 0.10) in the fundamental absorption region at T = 290 K and 80 K were investigated. A shift of absorption band edge was revealed when composition and temperature changed. The energy gap and its temperature coefficient were evaluated as well as analytical expressions which describe E$\text{}_{g}$(x,y,T) for quaternary solid solutions were analysed.