“…VI ternary compounds (where A = Fe, Mn, Ni, Co; B = Ga, In; X = S, Se, Te), containing elements with unfilled d shells, have recently become the object of intensive studies because of their combination of semiconductor and magnetic properties [1][2][3][4]. The indicated compounds are promising materials to use as a basis for designing lasers, light modulators, photodetectors, and other devices controllable by a magnetic field [5][6][7].…”