Abstract
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 (R2∝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.
Highlights
IntroductionAmekura H, Ohnuma M, Kishimoto N, Buchal C, Mantl S: Fluencedependent formation of Zn and ZnO nanoparticles by ion implantation and thermal oxidation: an attempt to control nanoparticle size
Introduction to Solid State PhysicsNew York: John Wiley & Sons Ltd; 2004. 24
We have investigated the growth kinetics of embedded Pb NPs in Al during the implantation process
Summary
Amekura H, Ohnuma M, Kishimoto N, Buchal C, Mantl S: Fluencedependent formation of Zn and ZnO nanoparticles by ion implantation and thermal oxidation: an attempt to control nanoparticle size. De Marchi G, Mattei G, Mazzoldi P, Sada C, Miotello A: Two stages in the kinetics of gold cluster in ion-implanted silica during isothermal annealing in oxidizing atmosphere. Leubner IH: Crystal formation (nucleation) under kinetically-controlled and diffusion-controlled growth conditions. We have investigated the growth kinetics of embedded Pb NPs in Al during the implantation process. The ion beam synthesized Pb NPs were observed to precipitate in a crystalline Al matrix at room temperature [8]. We obtain estimates for the following: (i) the concentration threshold for precipitation of ion beam synthesized Pb NPs in Al and (ii) the current density-dependent
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