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Physical review B
Using a many-body interatomic potential for the Au-Pd system, we determine a bulk phase diagram which presents unexpected characteristics for a system with ordering tendency. Indeed, this system displays a miscibility gap between pure Pd and Au c Pd 1−c (with c ≈ 0.2) beyond the order/disorder critical temperature of the AuPd 3 compound. Enthalpic and entropic contributions of the permutation free energy are determined via Monte Carlo simulations, in particular the vibrational entropy, which isdoi:10.1103/physrevb.99.014108 fatcat:vgjbnzpl4ffnphqqmtz5he6beu