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Re-examination of BCC based phase diagrams with constant first and second neighbor pair interactions in the cluster variation approximation

Author

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  • Sluitter, M.
  • Turchi, P.
  • Zezhong, Fu
  • De Fontaine, D.

Abstract

The tetrahedron approximation of the Cluster Variation Method (CVM) has been employed to calculate a number of BCC phase diagrams. Concentration-independent nearest- and next-nearest neighbor interactions (V1 and V2, respectively) have been varied so that the ratio of V2 over V1 takes values between 0.6 and unity. Special attention has been paid to the region where the B2 and B32 ordered phases have almost equal ground state energies. Some important features of the phase diagrams obtained with the CVM calculations have been compared with predictions from both low-temperature expansions and the Landau theory.

Suggested Citation

  • Sluitter, M. & Turchi, P. & Zezhong, Fu & De Fontaine, D., 1988. "Re-examination of BCC based phase diagrams with constant first and second neighbor pair interactions in the cluster variation approximation," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 148(1), pages 61-73.
    • Handle: RePEc:eee:phsmap:v:148:y:1988:i:1:p:61-73
    DOI: 10.1016/0378-4371(88)90134-3
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    References listed on IDEAS

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    1. Sanchez, J.M. & Ducastelle, F. & Gratias, D., 1984. "Generalized cluster description of multicomponent systems," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 128(1), pages 334-350.
    2. Fuad Baali, 1974. "Agrarian Reform Policies and Development in the Arab World," American Journal of Economics and Sociology, Wiley Blackwell, vol. 33(2), pages 161-173, April.
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