Simulations of metastable decay in two- and three-dimensional models with microscopic dynamics

M. A. Novotny, P. A. Rikvold, Miroslav Kolesik, D. M. Townsley, R. A. Ramos

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We present a brief analysis of the crossover phase diagram for the decay of a metastable phase in a simple dynamic lattice-gas model of a two-phase system. We illustrate the nucleation-theoretical analysis with dynamic Monte Carlo (MC) simulations of a kinetic Ising lattice gas on square and cubic lattices. We predict several regimes in which the metastable lifetime has different functional forms, and we provide estimates for the crossovers between the different regimes. In the multidroplet regime, the Kolmogorov-Johnson-Mehl-Avrami (KJMA) theory for the time dependence of the order-parameter decay and the two-point density correlation function allows extraction of both the order parameter in the metastable phase and the interfacial velocity from the simulation data.

Original languageEnglish (US)
Pages (from-to)356-363
Number of pages8
JournalJournal of Non-Crystalline Solids
Volume274
Issue number1
DOIs
StatePublished - Sep 2000

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Metastable phases
three dimensional models
Gases
Lattice vibrations
crossovers
decay
Phase diagrams
binary systems (materials)
Nucleation
simulation
data simulation
cubic lattices
gases
Kinetics
time dependence
phase diagrams
nucleation
life (durability)
kinetics
estimates

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

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Simulations of metastable decay in two- and three-dimensional models with microscopic dynamics. / Novotny, M. A.; Rikvold, P. A.; Kolesik, Miroslav; Townsley, D. M.; Ramos, R. A.

In: Journal of Non-Crystalline Solids, Vol. 274, No. 1, 09.2000, p. 356-363.

Research output: Contribution to journalArticle

Novotny, M. A. ; Rikvold, P. A. ; Kolesik, Miroslav ; Townsley, D. M. ; Ramos, R. A. / Simulations of metastable decay in two- and three-dimensional models with microscopic dynamics. In: Journal of Non-Crystalline Solids. 2000 ; Vol. 274, No. 1. pp. 356-363.
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