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The size evolution of Pb nanoparticles (NPs) synthesized by ion implantation in an epitaxial Al film has been experimentally investigated. The average radius  R  of Pb NPs was determined as a function of implantation fluence  f . The  R ( f ) data were analyzed using various growth models. Our observations suggest that the size evolution of Pb NPs is controlled by the diffusion-limited growth kinetics ( R  2 ∝ f ). With increasing implantation current density, the diffusion coefficient of Pb atoms in Al is evident to be enhanced. By a comparative analysis of the  R ( f ) data, values of the diffusion coefficient of Pb in Al were obtained.

Size evolution of ion beam synthesized Pb nanoparticles in Al