Composition assessment of ferric oxide by accurate peak fitting of the Fe 2 <i>p</i> photoemission spectrum

Abstract

A quantitative study of the surface composition of ferric oxide employing photoemission spectra is presented. It was possible to accurately reproduce the expected composition (Fe 2.00±0.05 O 3 ) by modeling the background as a combination of Shirley‐type (Shirley–Vegh–Salvi–Castle) and slope backgrounds through the active approach. The line‐shape employed to fit apparent peak asymmetries was the double‐Lorentzian. It was possible to resolve a previously unreported satellite located at ~729 eV. Copyright © 2016 John Wiley &amp; Sons, Ltd.