MAGNONS IN CUBIC MBE-GROWN AL1-XMNXTE LAYERS (A = CD, ZN, MG)

One-magnon excitations in MBE-grownA(1-x)Mn(x)Te layers (where A = Cd, Zn, Mg and x > 0.7) were investigated by means of the Raman scatterin g measurements at low temperatures (approximate to 20 K). The composit ion dependence of the anisotropy energy - as extracted from these meas urements - is discussed. Further, the elastic neutron scattering measu rements were performed in layers of cubic MnTe, which constitute the e nd point material of the ternary alloys series. Abundance of variously oriented antiferromagnetic domains in MnTe layers as a function of te mperature was studied. We confirm occurrence of a pronounced magnetost riction effect.