Iron deposition on the five-fold surface of the icosahedral Al-Pd-Mn quasicrystal

TitleIron deposition on the five-fold surface of the icosahedral Al-Pd-Mn quasicrystal
Publication TypeJournal Article
Year of Publication2007
AuthorsWearing LH, Smerdon JA, Leung L, Lograsso TA, Ross AR, McGrath R
Journal TitleSurface Science
Volume601
Pages3450-3455
Date PublishedAug
Type of ArticleArticle
ISBN Number0039-6028
Accession NumberISI:000249282600021
KeywordsAL(001), AUGER-ELECTRON SPECTROSCOPY, diffraction, epitaxy, fe, films, growth, iron, LAYER, leed, model, quasicrystal, stm, VIEW
Abstract

The room temperature adsorption behaviour of Fe on the five-fold surface of i-Al-Pd-Mn has been studied using scanning tunneling microscopy (STM), low energy electron diffraction (LEED), and Auger electron spectroscopy (AES). A complex growth scenario for Fe adsorption on this substrate is observed with STM. At coverages up to about 3 MLE (monolayer equivalent), layer-by-layer growth is observed whereby small clusters and islands are formed which eventually coalesce into almost complete monolayers. No LEED pattern is observed, indicating that the layers are disordered. The AES results rule out intermixing. Above this coverage, there is a transition to a multilayer island growth mode. The islands are rotated by 72 degrees and have the bcc(110) Fe structure. The results are compared with previous work on Fe adsorption on this substrate and on Al and Fe single crystal substrates. (C) 2007 Elsevier B.V. All rights reserved.

DOI10.1016/j.susc.2007.06.028
Alternate JournalSurf. Sci.