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Study of Erbium Oxidation by XPS and UPS

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Abstract:

X-ray and UV photoelectron spectroscopy (XPS and UPS were used for studying the oxidation of Er films deposited on Ta substrate under ultra-high vacuum.Oxidation has been carried out at room temperatue with an oxygen pressure of 2x10-5 mbar.Erbium exposition to oxygen produces ; Er2O3 and a hydoxide.Subjecting the sample to a post annealing treatment at 750 °C dissociates the hydroxide and produces additional Er2O3.UPS and XPS valence band gives evidence that the formed oxide is Er2O3.

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Periodical:

Materials Science Forum (Volumes 480-481)

Pages:

193-196

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.480-481.193

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Online since:

March 2005

Authors:

N. Guerfi, O. Bourbia, S. Achour

Keywords:

Erbium, Hydroxide, Oxidation, Oxide, UV Photoelectron Spectroscopy, X-Ray Photoelectron Spectroscopy (XPS)

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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