About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Physical Review B
Paper
Early stages of oxidation of the Fe{001} surface: Atomic structure of the first monolayer
Abstract
The reaction of a clean Fe{001} surface with oxygen gas was monitored with low-energy-electron diffraction (LEED) and Auger-electron spectroscopy. The formation of an Fe{001} 1 × 1-O structure at full monolayer coverage was confirmed, whereas the Fe{001} c(2×2)-O structure reported by three other groups could not be reproduced. A LEED structure analysis of the Fe{001} 1 × 1-O structure revealed that the oxygen atoms are located deep inside the fourfold symmetrical hollows of the substrate surface, with the first substrate interlayer spacing 7.5% expanded with respect to the bulk. The effective hard-sphere radius of the oxygen atom in this structure is 0.78. The results of the structure analysis are consistent with the results of photoemission experiments reported by others. © 1977 The American Physical Society.