Computer simulations of interdiffusion processes in the quasiternary system Ga_(2k)Hg_(3-3k)Se_(3l)Te_(3-3l)

摘要

Diffusion processes in quasiternary systems are described by a diffusion matrix which is the product of a matrix covering the kinetic properties and a matrix describing thermodynamic influences by interaction parameters and by ordering tendencies. The interdiffusion processes are simulated by a computer program and the calculated reaction paths are discussed on the basis of the experimentally determined phase diagram of this quasiternary system. It can be shown that thermodynamics governs the principal reaction paths, whereas the individual diffusion behaviour is controlled by the kinetic matrix including the tracer diffusion coefficients.