Diffusion in the aged aluminium film on iron
Galashev A Y, Rakhmanova O R, Kovrov V A, Zaikov Yu P
       

Temperature dependence of the “Al film at Fe substrate” system potential energy. Dashed line denotes a linear approximation of the Utot(T) function to T = 0 K. The insertion presents the time change in the system potential energy at T = 300 K.