Electron-energy-loss study of clean and oxygen-exposed polycrystalline zirconium

A detailed interpretation of reflection electron-energy-loss spectra taken from clean and oxygen-exposed polycrystalline Zr is described. Using a density-of-states model, the angular momentum character and binding energies of the unoccupied levels are discussed. Depth-sensitive oxidation state and p...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1987-06, Vol.35 (18), p.9451-9459
Main Authors: CORALLO, G. R, ASBURY, D. A, GILBERT, R. E, HOFLUND, G. B
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Other techniques and industries
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Summary:A detailed interpretation of reflection electron-energy-loss spectra taken from clean and oxygen-exposed polycrystalline Zr is described. Using a density-of-states model, the angular momentum character and binding energies of the unoccupied levels are discussed. Depth-sensitive oxidation state and plasmon information obtained by varying the primary electron beam energy from 100-600 eV is presented. The oxidation state of the Zr appears to increase with depth through the oxygen-containing layer, suggesting that oxides such as ZrO, Zr sub 2 O sub 3 , and possibly nonstoichiometric oxides are present. 53 ref.--AA
ISSN:0163-1829
1095-3795
DOI:10.1103/physrevb.35.9451