First-principles calculations on elastic, magnetoelastic, and phonon properties of Ni2FeGa magnetic shape memory alloys
He Wangqiang, Huang Houbing, Liu Zhuhong, Ma Xingqiao
       

The relationship between the calculated energy and volume. The solid curve represents the data from the EV curves fitted according to the 4th-order Birch–Murnaghan equation of state (EoS). The dots represent the actual calculated results.