Kinetics of spinodal decomposition in the Ising model with dynamic lattice liquid (DLL) dynamics

• Published in: Journal of non-crystalline solids Vol. 355; no. 24; pp. 1318 - 1324
• Main Authors: Halagan, Krzysztof, Polanowski, Piotr
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier B.V 01-08-2009; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Equations of state, phase equilibria, and phase transitions; Equilibrium properties near critical points, critical exponents; Exact sciences and technology; General studies of phase transitions; Modeling and simulation; Monte Carlo simulation; Physics; Solubility, segregation, and mixing; phase separation; 64.75.Ef; Modeling and simulation; 64.60.De; 02.70.Uu; Monte Carlo simulation; Molecular motion; Domain growth; Root mean square displacement; Critical points; Spinodal decomposition; Correlation functions; Binary mixtures; Critical phenomena; Local structure; Strong correlation; Lattice dynamics; Phase separation; Ising model; Kinetics
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2009.05.019

The phase separation dynamics in two-dimensional binary mixtures is studied by means of a dynamic lattice liquid (DLL) model. In contrast to other methods, a simulation based on a DLL model works properly for dense systems characterized by full occupation of the lattice sites. The DLL model is a base for the first parallel algorithm which takes into account coincidences of elementary molecular movements resulting in a local cooperative structural transformation. It permits observation of a phase separation process in a system where movements of particles are highly correlated. We have investigated the influence of the proposed dynamics on a critical temperature value of
T
C
, the domain growth and diffusion above and below
T
C
.