Temperature dependence of standard Gibbs energy of formation of Al2Nd from near absolute 0 K to room temperature

The standard Gibbs energy of formation as a function of temperature of Al2Nd, ΔfG°T(Al2Nd), in the temperature range from near absolute 0 K to room temperature was determined by combining the measurement of heat capacities, Cp, of pure aluminium and neodymium using the relaxation method with the thermodynamic data of Al2Nd in our previous work. The temperature dependence of ΔfG°T(Al2Nd) was small below 10 K, and it increased monotonically above 10 K. ΔfG°T(Al2Nd) could be evaluated as follows:ΔfG°T(Al2Nd)=−104.52−1.8436×10−2 T+1.6273×10−2 T log⁡T−5.8437×10−5 T2−1.5260×10−2 T−1±27.3,(3–75 K)ΔfG°T(Al2Nd)=−104.95+4.4274×10−3 T+3.6408×10−3 T log⁡T−3.5175×10−6 T2+13.983 T−1±27.3,(75–300 K).