Boundary of the Glass Formation Region in the Tm–As–S and Tm–As–Se Ternary Systems

Abstract—Based on the data obtained by complex methods of physicochemical analysis on studying various sections of ternary Tm–As–S(Se) systems and using the published data, the boundary of the glass formation region of the Tm–As–S and Tm–As–Se system is determined. It is established that at a cooling rate of 10 deg/min in the Tm–As–S system, the glass formation area of the system’s glass is 33 at % of the total area of the triangle; and at a cooling rate of 10² deg/min, 51 at % of the total area of the triangle. In the Tm–As–Se system under the specified cooling regimes, the glass area is 35 and 54 at %, respectively.