Growth of palladium nanoparticles: an experimental and numerical study

Vinay Agarwal, I. Aruna, Varsha Banerjee, B. R. Mehta

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13 Citations (Scopus)

Abstract

We study the effect of varying deposition time and temperature on the formation of palladium nanoparticles in an attempt to identify microscopic process which contribute towards their evolution. Computer simulations of a stochastic lattice model with the basic mechanisms of adsorption, diffusion and irreversible aggregation have been performed to mimic the underlying mechanism of particle growth. We propose a mass and temperature dependent diffusion term of the form D (m,T) D0 (T) m-γ in order to obtain qualitative agreement with experimental data. The possibility of tuning deposition time, temperature and flux to obtain narrow particle size distributions has been explored. Wherever pertinent, simple analytical arguments have been presented.

Original languageEnglish
Article number035412
Number of pages8
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume74
Issue number3
DOIs
Publication statusPublished - 11 Jul 2006
Externally publishedYes

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