Investigation of Iron on Gold Sub-Monolayer by Scanning Tunnelling Microscopy
Author(s):
Moftah A. Hussain, Mohammed. M. Mohsen , Hassan A. Khairallal, Brijesh Kumar
Keywords:
Epitaxial Thin Film Technology, Scanning Tunnelling Microscopy, Monolayer, Gold, Iron, Reconstruction, Super Lattices Growth.
Abstract
Scanning Tunnelling Microscopy (STM) studies proved that the growth of Iron (Fe) on the gold (Au) (001)-hex surface was determined up to 0.4 monolayer (ML) by the enhanced diffusion along with reconstruction ridges. The reconstruction also determines the dimensions of the Fe islands. The growth is far from the equilibrium, which is not reached even within hours. As the coverage increases, the growth becomes to be influenced by the segregation of Au to the surface as postulated in earlier papers from atomic structure (AS). The segregation is closely connected with the vanishing of the Au reconstruction. The Au top layer, called the "self-surfactant layer", promotes the layer-by-layer growth of Fe. The mass transport observed during the growth and the Au segregation to the surface influences strongly the Au-Fe superlattices growth.
Article Details
Unique Paper ID: 152773

Publication Volume & Issue: Volume 8, Issue 4

Page(s): 613 - 619
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Volume 8 Issue 4

Last Date 25 September 2021

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