The ternary system Ce–Si–Y

Abstract

Abstract Phase relationships were reinvestigated for the isothermal section of the Ce–Y–Si system at 600°C using X-ray powder diffraction techniques and EMPA. From Rietveld refinements the alloy CeY 4 Si 4 was found to crystallize with the partially disordered Ce 2 Sc 3 Si 4 -type. The existence of extended mutual solid solutions, as observed earlier, is generally confirmed, however, the extent of the homogeneity regions and the phase field distribution was changed. Magnetic Squid measurements of the binary phases with large ternary solubility show in most cases paramagnetic tripositive cerium down to liquid helium temperature.