Preparation and physical properties of rare earth, alkaline earth, and transition metal ternary chalcogenides

A study was made on current-voltage characteristics, temperature dependences of electric conductivity and currents of thermoinduced depolarization of monocrystals, including EuGa2S4 and (Ga2S3)1-x(Eu2O3)x solid solutions. It is shown that these compounds, activated by europium, cerium, neodymium and other rare earths, manifest effective luminescence under the effect of ultraviolet and X-radiation, as well as under the effect of electron beams and electric field