Physics
Scientific paper
Sep 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007njph....9..331s&link_type=abstract
New Journal of Physics, Volume 9, Issue 9, pp. 331 (2007).
Physics
3
Scientific paper
We have studied the thermal oxidation of the intermetallic alloy CoGa in situ, in real time on the atomic scale, during the growth of an ultrathin, epitaxial Ga oxide layer. On the basis of an extended set of surface x-ray diffraction data, density functional theory calculations and core level spectroscopy data, we find that the oxide film consists of an oxygen ion double layer, which contains the basic building block of bulk β-Ga2O3. The oxide formation takes place via the nucleation of two-dimensional, anisotropic oxide islands which laterally grow and coalesce. A dramatic increase of the oxide island size is observed for low O2 pressures in the 10-8 mbar regime, which we interpret as the onset of a step flow like growth mode. This allows us to conclude that thermal oxidation can be considered as a hetero-epitaxial growth process, that follows similar atomistic growth principles to molecular beam epitaxy. As a consequence, the structural perfection of the oxide layer can be tailored by the appropriate choice of oxygen pressure and temperature.
We write this paper in memorial to René Franchy [1].
Andersen J. N.
Costina I.
Dosch Helmut
Franchy René
Kresse Georg
No associations
LandOfFree
Real time observation of ultrathin epitaxial oxide growth during alloy oxidation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Real time observation of ultrathin epitaxial oxide growth during alloy oxidation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Real time observation of ultrathin epitaxial oxide growth during alloy oxidation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1291106