Retardation of oxidation in Co nanocolumns: Scanning tunneling microscopy study
- 9 December 2002
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 81 (24) , 4601-4603
- https://doi.org/10.1063/1.1527980
Abstract
The oxidation of Co nanocolumns grown by the glancing angle deposition technique was studied ex situ using scanning tunneling microscopy and spectroscopy. The normalized conductance (dI/dV)/(I/V) of a single nanocolumn shows a nonoxidized Co peak at about −0.7 eV corresponding to the 3d valence electrons which was absent in the conventional film. It is argued that a retardation of the oxidation occurred in the Co nanocolumn due to the lack of grain boundaries in the isolated nanocolumns.Keywords
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