Simulations of spinodal nucleation in systems with elastic interactions

Systems with long-range interactions quenched into a metastable state near the pseudospinodal exhibit nucleation that is qualitatively different from classical nucleation near the coexistence curve. We observe nucleation droplets in Langevin simulations of a two-dimensional model of martensitic tran...

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Veröffentlicht in:Physical review letters 2005-08, Vol.95 (9), p.095701.1-095701.4, Article 095701
Hauptverfasser: GAGNE, C. J, GOULD, Harvey, KLEIN, W, LOOKMAN, T, SAXENA, A
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Sprache:eng
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Zusammenfassung:Systems with long-range interactions quenched into a metastable state near the pseudospinodal exhibit nucleation that is qualitatively different from classical nucleation near the coexistence curve. We observe nucleation droplets in Langevin simulations of a two-dimensional model of martensitic transformations and determine that the structure of the nucleating droplet differs from the stable martensite structure. Our results, together with experimental measurements of the phonon dispersion curve, allow us to predict the nature of the droplet. The results have implications for nucleation in many solid-solid transitions and the structure of the final state.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.95.095701