Thermal oxidation of polycrystalline tungsten nanowire
Abstract
The progressive oxidation of polycrystalline tungsten nanowires with diameters in the range of 10-28 nm is studied. The structure and morphology of the tungsten and tungsten oxide nanowires were investigated in detail by transmission electron microscopy. By observing changes in the oxide-shell thickness, a self-limiting oxidation mechanism was found to retard the oxidation rate. Surface reaction and the oxygen diffusion effects were considered in order to understand the influence of stress on the oxidation process.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- November 2010
- DOI:
- Bibcode:
- 2010JAP...108i4312Y
- Keywords:
-
- diffusion;
- internal stresses;
- nanowires;
- oxidation;
- semiconductor materials;
- semiconductor quantum wires;
- transmission electron microscopy;
- tungsten;
- tungsten compounds;
- 81.65.Mq;
- 61.46.Km;
- 66.30.Pa;
- 81.07.Gf;
- Oxidation;
- Structure of nanowires and nanorods;
- Diffusion in nanoscale solids