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Theory of atomic ordering in copper-platinum alloys

  • Solid State Physics
  • Published:
Soviet Physics Journal Aims and scope

Abstract

An expression is obtained for the energy of a binary system with an hcp lattice using a many-particle model. This expression is used for calculating regions of relative stability of modifications of the copper-platinum alloy. The effect of a many-particle interatomic interaction on the order-disorder phase equilibrium diagram and on order parameters is studied. Agreement between theory and experiment has been achieved for the first time for the phase diagram as well as for short-range order parameters in the two spheres of copper-platinum alloy. It is shown, within the framework of the model used, that such a comprehensive agreement between theory and experiment is possible only if many-particle interaction and the trigonal character of L11 phase are taken into account. Calculations were performed with the help of the multicluster version of the Kikuchi method in the tetrahedron + triangle approximation. Results obtained clarify significantly the Understanding of the interatomic interaction in copper-platinum alloy.

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Authors and Affiliations

  1. Abakan Pedagogical Institute, USSR

    V. N. Udodov, N. S. Golosov, A. A. Antsupov & A. V. Ushakov

Authors
  1. V. N. Udodov
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  2. N. S. Golosov
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  3. A. A. Antsupov
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  4. A. V. Ushakov
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Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 46–53, March, 1984.

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Udodov, V.N., Golosov, N.S., Antsupov, A.A. et al. Theory of atomic ordering in copper-platinum alloys. Soviet Physics Journal 27, 208–212 (1984). https://doi.org/10.1007/BF00912196

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  • DOI: https://doi.org/10.1007/BF00912196

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