Measurements of the effects of alloying lead with silver and palladium on the diffusivity of gold in lead are reported. It is observed that both Pd and Ag strongly de-enhance Au diffusion in lead; in fact, the Pd de-enhances Au diffusivity in Pb more pronouncedly than alloying lead with gold. It was found that the binding energy between a Au tracer in an interstitial site and Pd, Au, or Ag atoms in substitutional sites to form substitutional dimers was the same in all three cases.

• Received 15 May 1979

DOI:https://doi.org/10.1103/PhysRevB.20.3036