Thermodynamics and kinetic theory of nucleation and the evolution of liquid precipitates in gallium arsenide wafer

Thermodynamics and kinetic theory of nucleation and the evolution of liquid precipitates in gallium arsenide wafer

We study nucleation and evolution of liquid droplets in semi-insulating solid gallium arsenide (GaAs). For a realistic modelling, the crucial issue of a combined thermodynamic and kinetic treatment is the coupling of diffusion, chemical reactions and interface motion with local inhomogeneous mechanical stress fields in the solid matrix. In this note we present a hierarchy of models on various space scales. With more detail we discuss a kinetic model for the Becker–Döring regime and a thermodynamic model to describe diffusion in the vicinity of a single droplet.

Fig. 1. Hierarchy of various thermodynamic and kinetic models for the description of the nucleation and evolution of liquid droplets in solid GaAs.

Source:Journal of Crystal Growth

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2013-10-24 Diffusion, Interface, Nucleation, Phase diagrams

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