Fluctuation effects in first-order phase transitions: Theory and model for martensitic transformations

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  • Per-Anker Lindgård
  • Ole G. Mouritsen

We discuss central questions in weak, first-order structural transitions by means of a magnetic analog model. A theory including fluctuation effects is developed for the model, showing a dynamical response with softening, fading modes and a growing central peak. The model is also analyzed by a two-dimensional Monte Carlo simulation, showing clear precursor phenomena near the first-order transition and spontaneous nucleation. The kinetics of the domain growth is studied and found to be exceedingly slow. The results are applicable for martensitic transformations and structural surface-reconstructive transitions.

Original languageEnglish
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume41
Issue number1
Pages (from-to)688-703
Number of pages16
ISSN2469-9950
DOIs
Publication statusPublished - 1990
Externally publishedYes

ID: 236894064