Abstract
One simple way to incorporate short range order effects within the Hamiltonian of a binary alloy AxB1-x can be achieved by parameterizing the Coherent Potential Approximation (CPA). According to this parameterization1, a correlation parameter PA/B is introduced to specify the probability a lattice site to be occupied by an atom of type A when a nearest lattice site is occupied by an atom of type B. The correlation parameter PA/B appears as an independent parameter of the total energy, Etot, of the system and therefore the energetically favored state of the AxB1-x alloy is associated with the minimum of the energy function Etot = Etot (PA/B). This theory has been used2–3 within the Bethe lattice approximation to binary alloys which exhibit only diagonal disorder.
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© 1989 Kluwer Academic Publishers
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Andriotis, A.N., Lowther, J.E. (1989). Cluster Bethe Lattice Approach to Chemically Disordered Alloys with Short Range Order. In: Stocks, G.M., Gonis, A. (eds) Alloy Phase Stability. NATO ASI Series, vol 163. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0915-1_25
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DOI: https://doi.org/10.1007/978-94-009-0915-1_25
Publisher Name: Springer, Dordrecht
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