Thermodynamic properties of rare earth elements in La–RE–Ga–In alloys (RE = Nd, Y)

Thermodynamic properties of La, Nd, and Y were studied in pseudo-quaternary systems La–Nd–(Ga–In)eut and La–Y–(Ga–In)eut. Temperature dependences of lanthanum, neodymium, and yttrium activity in the alloys were determined at 300–800 °C employing the e.m.f. method. Partial thermodynamic functions of lanthanum in the alloys studied were calculated on the basis of the experimental data.