Degenerate Blume-Emery-Griffiths model for the martensitic transformation

E. Vives, T. Castan, Per-Anker Lindgård

    Research output: Contribution to journalJournal articleResearch


    A generalization of the Blume-Emery-Griffiths model is introduced in which an entropy stabilization of the high-temperature phase is controlled by a degeneracy parameter p greater than or equal to 1. The model describes a first- and a second-order phase transition as a function of temperature between two ordered phases. This is relevant for the martensitic transition problem. Mean-field calculations and Monte Carlo simulations are presented. The model predicts a constant entropy change at the transition for various transition temperatures in agreement with the behavior found experimentally.
    Original languageEnglish
    JournalPhysical Review B
    Issue number14
    Pages (from-to)8915-8921
    Publication statusPublished - 1996


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