Show that the expressions given in the text for the critical temperature of a first-order phase transition [Equation (4.19)] and for the abrupt order parameter change of η = ±(3B/4C)^½ at T_c are consistent with the definition that the three minima in the Gibbs energy curve are equal to G₀ at T_c (Figure 4.17).

Equation (4.19)

Figure 4.17

Transcribed Image Text:

Te To + 3 B 16 aC