Calculated Phase Diagram for the $\gamma \rightleftharpoons \alpha$ Transition in Ce

We have calculated the pressure-temperature phase diagram of the $\gamma \rightleftharpoons \alpha$ isostructural transition in Ce on the basis of the Mott transition model. The theory correctly describes the linear variation of the transition temperature with pressure and the existence of a critical point. The quantitative agreement with the experimental diagram is good. The influence of different free energy contributions (configurational, magnetic, and vibrational) on the phase transition in Ce is discussed.