Z. Wu et al., IDENTIFICATION OF INDUCED REACTION DURING XPS DEPTH PROFILE MEASUREMENTS OF CEO2 SI FILMS GROWN BY ION-BEAM EPITAXY/, Vacuum, 49(2), 1998, pp. 133-137
An anomalous behavior was observed in X-ray photoelectron Spectroscopy
(XPS) depth profile measurements conducted on CeO2/Si epilayers grown
by ion beam epitaxy (IBE): the signals of Ce3+ and Ce4+ co-exist, and
the ratio between them increases during the etching time and then ten
ds to maintain a constant level before increasing again. The results o
f X-ray Diffraction (XRD), Auger Electron Spectroscopy (AES), and Ruth
erford Back-Scattering (RES) measurements proved that the reduction ch
emical reaction of CeO2 is induced by ion-etching. (C) 1998 Elsevier S
cience Ltd. All rights reserved.