Affiliation:
1. Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1, Canada
Abstract
A film of niobium (~ 15 Å thick) deposited under ultrahigh vacuum (UHV) conditions on polycrystalline zirconium was studied by x-ray photoelectron spectroscopy (XPS) as it was taken through a series of sequential treatments. The Nb–Zr interface, associated with a Nb 3 d 5/2 peak at 203.4 eV, is indicated to passivate the underlying Zr to oxygen and hydrogen plasma treatments, which in the absence of Nb would yield substantial oxidation. On heating to 500°C, the pure metallic Nb 3 d 5/2 component at 202.2 eV appears, and this change is accompanied by removal of the passivation effect on the substrate.
Publisher
World Scientific Pub Co Pte Lt
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics
Cited by
3 articles.
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