Figure 1. The position of the phase boundary as a function of the applied stress s at h ₀ = y ₀ = s  and M_f = 2.0 . Curves 1-5 are constructed for the values w  = 0.1, 0.3, 0.6, 0.75 and 0.9. (a) The dependence Z₀ ( s ) at p = 0.5s  (normal phase transition). (b) The dependence Z₀ ( s ) at p = - 0.5s  (anomalous phase transition).