Solubility and excessive thermodynamic characteristics of Pr and Nd in the Ga–Sn eutectic alloy

The praseodymium and neodymium solubilities in the gallium–tin eutectic melt were measured for the first time in a temperature range of 423–1073 K using a high-temperature sampling technique. The data on the activity and solubility are used to calculate the activity coefficients, the excessive thermodynamic characteristics of α-praseodymium and α-neodymium in the Ga–Sn eutectic melts, and the separation factor for the Pr/Nd pair on gallium–tin electrodes in chloride melts.