Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5425754 | Surface Science | 2006 | 5 Pages |
Abstract
Scanning tunneling microscopy (STM) has been used to investigate the nucleation and stability of iron clusters on the Al2O3/Ni3Al(1Â 1Â 1) surface as a function of coverage and annealing temperature. We show that atomic beam deposition of iron leads to hexagonally ordered cluster arrangements with a distance of 24Â Ã between the clusters evidencing the template effect of the alumina film. The shape of the iron clusters is two-dimensional (2D) at deposition temperatures from 130Â K to 160Â K and three-dimensional (3D) at 300Â K. However, the 2D iron clusters grown between 130Â K and 160Â K are stable up to 350Â K.
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Physical and Theoretical Chemistry
Authors
A. Lehnert, A. Krupski, S. Degen, K. Franke, R. Decker, S. Rusponi, M. Kralj, C. Becker, H. Brune, K. Wandelt,