Journal
JOURNAL OF APPLIED PHYSICS
Volume 113, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4792218
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- Normandy Research
- French Ministry of Research
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SiOX/SiO2 multilayers have been prepared using magnetron sputtering and annealed in order to induce the growth of Si nanoparticles in Si-rich sublayers. This sample has undergone several successive annealing treatments and has been analyzed using a laser-assisted tomographic atom probe. This allows the phase separation between Si and SiO2 and the growth process to be studied at the atomic scale as a function of annealing temperature. Si diffusion coefficient is estimated from the accurate measurement of matrix composition and Si particle size. We demonstrate that the diffusion coefficient in SiOX is supersaturation dependent, leading to a decrease in silicon particle growth kinetics during annealing. In addition, we use our measurements to predict the critical thickness for efficient SiO2 diffusion barriers. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4792218]
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