The isothermal section at 500 °C of the Gd-Tb-Ga ternary system

The maximum solid solubilities of Ga in (Gd, Tb) at 500 °C is 5.0 at.%. The homogeneity range of (Gd, Tb)Ga2 is from 20 to 33.3 at.% Ga in Gd-Ga side but limited in Tb-Ga side. The solid solubilities of Ga in the other phases cannot be detected. The Curie temperatures of the Gd0.6Tb0.4−xGax alloys increase from 270 to 298 K as x increases from 0 to 0.03.