Section EuNdGa sub(3)S sub(7)-EuGa sub(4)S sub(7) of the ternary system Nd sub(2)S sub(3)-Ga sub(2)S sub(3)-EuS

The section EuNdGa sub(3)S sub(7)-EuGa sub(4)S sub(7) of the ternary system Nd sub(2)S sub(3)-Ga sub(2)S sub(3)-EuS was studied by physicochemical analysis methods (differential thermal, X-ray powder diffraction, and microstructural analyses and microhardness and density measurements). The data obtained were used to construct the state diagram of the section EuNdGa sub(3)S sub(7)-EuGa sub(4)S sub(7). The section was found to be a quasi-binary section of the ternary system and is of the eutectic type. The coordinates of the eutectic are 64 mol % EuGa sub(4)S sub(7) and T sub(melt) = 1170 K. A region of solid solutions based on both components was found.