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Co–Au core-shell nanocrystals formed by sequential ion implantation into SiO₂

Kluth, P.; Hoy, B.; Johannessen, B.; Dunn, S. G.; Foran, G. J.; Ridgway, M. C.


Co–Au core-shell nanocrystals (NCs) were formed by sequential ion implantation of Au and Co into thin SiO₂. The NCs were investigated by means of transmission electron microscopy and extended x-ray absorption fine structure spectroscopy. The latter reveals a bond length expansion in the Co core compared to monatomic Co NCs. Concomitantly, a significant contraction of the bond length and a significant reduction of the effective Au–Au coordination number were observed in the Au shells. Increased...[Show more]

CollectionsANU Research Publications
Date published: 2006-10-12
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.2360891


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