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Title: Density-functional theory for random alloys: Total energy within the coherent-potential approximation

Journal Article · · Phys. Rev. Lett.; (United States)

A density-functional--based theory is developed for calculation of the total energy and pressure of random substitutional alloys within the Korringa-Kohn-Rostoker coherent-potential approximation. The theory is used to calculate the concentration variation of the equilibrium lattice spacing of ..cap alpha..-phase Cu/sub c/Zn/sub 1-c/ alloys. We find, in agreement with experiment, that the variation is almost linear and that it deviates from Vegard's rule.

Research Organization:
Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221
DOE Contract Number:
AC05-84OR21400
OSTI ID:
5755987
Journal Information:
Phys. Rev. Lett.; (United States), Vol. 56:19
Country of Publication:
United States
Language:
English