Model for a vibrating disordered binary alloy
- 15 February 1989
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 39 (6) , 3616-3619
- https://doi.org/10.1103/physrevb.39.3616
Abstract
Arguments are given for a model Hamiltonian of a disordered binary alloy, which includes the dependence of the vibrational frequencies on the atomic configuration. A new feature is that the short-range-order parameter α approaches a nonzero value in the high-temperature limit. Predictions for the T dependence of α(T) and the concentration dependence of α(∞) are in good agreement with experiment for nickel-copper alloys. The agreement for the magnitude of α(∞) is fair.Keywords
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