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Updated: Sep 11, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Mean-field theory for the metastable states of a simple substance
Jacobo Troncoso1, Claudio A Cerdeiriña1
1Unidad MSMN Asociada al CSIC por el IQF Blas Cabrera, Instituto de Física e Ciencias Aeroespaciais da Universidade de Vigo, Ourense 32004, Spain.
Abstract:
A three-state Ising model properly describing crystal, liquid, and gas phases of a simple substance like argon [Phys. Rev. E 109, 014123 (2024)2470-00410.1103/PhysRevE.109.014123] is analyzed at a mean-field level in connection with metastable states and spinodal limits. This mainly comprises the stretched liquid and crystal at negative pressure, the superheated liquid and crystal, the supercooled liquid, and the metastable continuations of binodal curves. The model is consistent with available information from experiment and simulation, except for a supercooled liquid spinodal that it predicts. This defect is repaired by devising an enhanced four-state model, with the consequence that spinodal suppression is relevant to the topic of one-component liquid-liquid criticality. The present work on a simple substance thus paves the way to addressing the interplay between the crystal and supercooled liquid phases of water theoretically.
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