Effects of ion irradiation on metallic nanocrystals formed by ion beam synthesis in SiO2

Patrick Kluth; Mark C. Ridgway

doi:10.1016/j.nimb.2005.08.065

Effects of ion irradiation on metallic nanocrystals formed by ion beam synthesis in SiO₂

Patrick Kluth^*, Mark C. Ridgway

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Au nanocrystals (NCs) fabricated by ion implantation into thin SiO ₂ and annealing were irradiated with 2.3 MeV Sn ions at -180 °C. The NCs were investigated using cross-section transmission electron microscopy (TEM) as a function of irradiation dose. We observe nucleation of new nanocrystals as a consequence of collisional mixing and their growth at the expense of the larger ones upon further irradiation. These observations are consistent with the process of inverse Ostwald ripening, although thermally activated diffusion can be neglected due to the low irradiation temperature. Concomitant with the change in size distribution is a change in NC morphology caused by the anisotropic distribution of recoils during collisions.

Original language	English
Pages (from-to)	458-460
Number of pages	3
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	242
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nimb.2005.08.065
Publication status	Published - Jan 2006

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10.1016/j.nimb.2005.08.065

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title = "Effects of ion irradiation on metallic nanocrystals formed by ion beam synthesis in SiO2",

abstract = "Au nanocrystals (NCs) fabricated by ion implantation into thin SiO 2 and annealing were irradiated with 2.3 MeV Sn ions at -180 °C. The NCs were investigated using cross-section transmission electron microscopy (TEM) as a function of irradiation dose. We observe nucleation of new nanocrystals as a consequence of collisional mixing and their growth at the expense of the larger ones upon further irradiation. These observations are consistent with the process of inverse Ostwald ripening, although thermally activated diffusion can be neglected due to the low irradiation temperature. Concomitant with the change in size distribution is a change in NC morphology caused by the anisotropic distribution of recoils during collisions.",

keywords = "Inverse Ostwald ripening, Ion implantation, Ion irradiation, Nanocrystals",

author = "Patrick Kluth and Ridgway, {Mark C.}",

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T1 - Effects of ion irradiation on metallic nanocrystals formed by ion beam synthesis in SiO2

AU - Kluth, Patrick

AU - Ridgway, Mark C.

PY - 2006/1

Y1 - 2006/1

N2 - Au nanocrystals (NCs) fabricated by ion implantation into thin SiO 2 and annealing were irradiated with 2.3 MeV Sn ions at -180 °C. The NCs were investigated using cross-section transmission electron microscopy (TEM) as a function of irradiation dose. We observe nucleation of new nanocrystals as a consequence of collisional mixing and their growth at the expense of the larger ones upon further irradiation. These observations are consistent with the process of inverse Ostwald ripening, although thermally activated diffusion can be neglected due to the low irradiation temperature. Concomitant with the change in size distribution is a change in NC morphology caused by the anisotropic distribution of recoils during collisions.

AB - Au nanocrystals (NCs) fabricated by ion implantation into thin SiO 2 and annealing were irradiated with 2.3 MeV Sn ions at -180 °C. The NCs were investigated using cross-section transmission electron microscopy (TEM) as a function of irradiation dose. We observe nucleation of new nanocrystals as a consequence of collisional mixing and their growth at the expense of the larger ones upon further irradiation. These observations are consistent with the process of inverse Ostwald ripening, although thermally activated diffusion can be neglected due to the low irradiation temperature. Concomitant with the change in size distribution is a change in NC morphology caused by the anisotropic distribution of recoils during collisions.

KW - Inverse Ostwald ripening

KW - Ion implantation

KW - Ion irradiation

KW - Nanocrystals

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JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-2

ER -

Effects of ion irradiation on metallic nanocrystals formed by ion beam synthesis in SiO₂

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