[PDF] Mean-field study of the degenerate Blume–Emery–Griffiths model in a random crystal field11Work partially supported by the Brazilian agencies CNPq and FINEP | Semantic Scholar

Mean-field study of the degenerate Blume–Emery–Griffiths model in a random crystal field11Work partially supported by the Brazilian agencies CNPq and FINEP

@article{Branco1998MeanfieldSO,
title={Mean-field study of the degenerate Blume–Emery–Griffiths model in a random crystal field11Work partially supported by the Brazilian agencies CNPq and FINEP},
author={N. Branco and L. Bachmann},
journal={Physica A-statistical Mechanics and Its Applications},
year={1998},
volume={257},
pages={319-324}
}

Physica A-statistical Mechanics and Its Applications

The degenerate Blume–Emery–Griffiths (DBEG) model has recently been introduced in the study of martensitic transformation problems. This model has the same Hamiltonian as the standard Blume–Emery–Griffiths (BEG) model but, to take into account vibrational effects on the martensitic transition, it is assumed that the states S=0 have a degeneracy p (p=1 corresponds to the usual BEG model). This model was studied by E. Vives et al. for a particular value of Δ, through a mean-field approximation… CONTINUE READING