Iron deposition on the tenfold surface of the Al72Ni11Co17 decagonal quasicrystal

DOI: 10.1088/0953-8984/20/01/015005

Authors: L. H. Wearing (University of Liverpool) , J. A. Smerdon (University of Liverpool) , L. Leung (University of Liverpool) , Ju. Ledieu (Institut Jean Lamour) , I. Fisher (Iowa State University) , C. J. Jenks (Iowa State University) , R. Mcgrath (University of Liverpool) , S. S. Dhesi (Diamond Light Source) , P. Bencok (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Physics: Condensed Matter , VOL 20 (1)

State: Published (Approved)
Published: January 2008

Abstract: The adsorption behaviour of Fe on the tenfold surface of the decagonal quasicrystal Al72.6Ni10.5Co16.9 has been studied using scanning tunnelling microscopy, low energy electron diffraction (LEED), Auger electron spectroscopy (AES) and x-ray magnetic circular dichroism (XMCD). The results show the growth of a disordered film up to a coverage of 9 MLE (monolayer equivalent) after which polycrystalline island growth is observed. These islands are interconnected, and the LEED pattern indicates that they preferentially align along five directions. The AES results indicate that the film is composed of Fe intermixed with the substrate elements. The XMCD results point to an induced magnetic moment for Co and Ni in the intermixed layer/interface region.

Journal Keywords: Adsorption; Aluminium Compounds; Auger Electron Spectroscopy; Cobalt Compounds; Deposition; Electron Diffraction; Films; Interfaces; Iron; Layers; Magnetic Circular Dichroism; Magnetic Moments; Nickel Compounds; Polycrystals; Scanning Tunneling Microscopy; Substrates; Surfaces; X Radiation

Subject Areas: Physics


Technical Areas: