Diffusion coefficients of an interacting lattice gas beyond the quasichemical approximation

被引：6

作者：

Bokun, S

Uebing, C

Vikhrenko, VS

Zhuk, VA

机构：

[1] Belarussian State Technol Univ, Minsk 220630, BELARUS

[2] Max Planck Inst Eisenforsch GmbH, D-40074 Dusseldorf, Germany

[3] Belarussian Acad Sci, Inst Math, Minsk 220072, BELARUS

来源：

SOLID STATE IONICS | 1999年 / 119卷 / 1-4期

关键词：

lattice gas; diffusion coefficient; interparticle interaction; distribution functions; statistical sum; free energy; chemical potential; critical temperature; coexistence curve; Monte Carlo simulation;

D O I：

10.1016/S0167-2738(98)00523-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A method for regular improvement of the mean field approximations for lattice systems is proposed. The method requires transcription of the initial lattice to a new lattice of complex sites each representing the states of several initial sites. This approach is valuable for the description of many-particle distributions on the lattice. The validity of this approach is tested by comparison of the coexistence curve, the concentration dependence of the probabilities for two lattice sites to be vacant and the jump diffusion coefficients for two-dimensional square lattice gas with Monte Carlo simulation data. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：331 / 335

页数：5

共 25 条

[1]

Allnatt A. R., 1993, ATOMIC TRANSPORT SOL

[2]

BALESCU R, 1978, EQUILIBRIUM NONEQUIL

[3] ANOMALOUS DIFFUSION IN DISORDERED MEDIA - STATISTICAL MECHANISMS, MODELS AND PHYSICAL APPLICATIONS [J].