Control and parameterization of dynamical nonlinear processes during first-order phase transition

Thermodynamical conditions of beginning dynamical nonlinear processes near the melting point of crystal matters with different type of chemical bond were identified by the technique of digital differential-thermal analysis (DTA). Cooperative pre- and post-melting effects are nonequilibrium phase transitions and can be characterized by the system of thermodynamical parameters J. Introduced system of the parameters characterise of formation specific structure state in a material-mesophase pre- and post-melting. Parameterization of the transient processes during first-order phase transition gives opportunity to investigate influence of different factors, such as initial conditions, heating rate, mass of sample, internal magnetic fields, on mesophase formation.