Nucleation of ordered Fe islands on Al2O3/Ni3Al(111)

A. Lehnert, A. Krupski, S. Degen, K. Franke, R. Decker, S. Rusponi, M. Kralj, C. Becker, H. Brune, K. Wandelt

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Scanning tunneling microscopy (STM) has been used to investigate the nucleation and stability of iron clusters on the Al2O3/Ni3Al(111) 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 24 Å 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 130 K to 160 K and three-dimensional (3D) at 300 K. However, the 2D iron clusters grown between 130 K and 160 K are stable up to 350 K.
    Original languageEnglish
    Pages (from-to)1804-1808
    JournalSurface Science
    Volume600
    Issue number9
    Early online date6 Mar 2006
    DOIs
    Publication statusPublished - 1 May 2006

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