  New EAM potentials for the ternary palladium-silver-hydrogen system are
developed by extending a previously developed palladium-hydrogen potential. The
ternary potentials accurately capture the heat of mixing and structural
properties associated with solid solution alloys of palladium-silver. Stable
hydrides are produced with properties that smoothly transition across the
compositions. Additions of silver to palladium are predicted to alter the
properties of the hydrides by decreasing the miscibility gap and increasing the
likelihood of hydrogen atoms occupying tetrahedral interstitial sites over
octahedral interstitial sites.
