Thermodynamics of phase equilibria and LPE kinetics of elastically strained layers in Cd-Hg-Te system

In terms of diffusion-limited growth model the kinetic analysis of CdxHg1-xTe solid solutions Liquid Phase Epitaxy (LPE) process is carried out. The assumption of phase equilibrium existence on the interface, while component concentrations are connected by the equations of phase equilibria, written down in terms of poly associated solutions model, served as the boundary conditions for the solution of diffusion mass transfer problem. By comparison of calculated data on dependence of layer parameters versus growth conditions, made either taking into account mechanical strains in growth system or not, the elastic energy of strained solid phase affection on phase formation in Cd-Hg-Te system is analyzed. The developed thermodynamic model of growth process allowed to achieve the precision description of solid solutions growth conditions as well as predict the regimes of layers growth with the given composition in Cd-Hg-Te system. (authors)