“…(24) Thus, with a fixed parameter 0 ≤ η < 1, function F(η, ϕ) can describe the non-equilibrium transition of the first kind from amorphous (ϕ 1 = 0) to nanocrystalline state (ϕ 3 = 1) through the potential barrier F η, ϕ 2 (η) . Analyzing (22), we can see that function F(η, ϕ) in the definition domain of variables 0 ≤ η < 1, 0 ≤ ϕ ≤ 1 has two minima (η, 0), (η, 1); one maximum 0, 1 2 and three saddle points (0,0), (0,1), η, 1 2 [1−η] . With η = 1 the potential barrier F η, ϕ 2 (η) disappears, point (1,0) becomes an unstable saddle-point, only one minimum (1,1) remains.…”