| AVS 65th International Symposium & Exhibition | |
| Applied Surface Science Division | Wednesday Sessions |
| Session AS+NS+SA-WeM |
| Session: | Beyond Traditional Surface Analysis |
| Presenter: | Michael Brumbach, Sandia National Laboratories |
| Authors: | M.T. Brumbach, Sandia National Laboratories D.A. Casalnuovo, Sandia National Laboratories E.V. Barnat, Sandia National Laboratories C. Winters, Sandia National Laboratories D. Robinson Brown, Sandia National Laboratories C.S. Snow, Sandia National Laboratories A.M. Grillet, Sandia National Laboratories |
| Correspondent: | Click to Email |
Manipulation of metal surface chemistry through vacuum gas dosing has been demonstrated for many years. Additionally, ex situ preparation methods, ion sputtering, and/or in vacuo thermal treatment are all known to change surface properties through oxidation, removal of oxide, change in microstructure, altering contaminants, or other mechanisms. While these studies have been performed for decades, there are few examples of these experiments for pure scandium films. Furthermore, few examples of dosing clean scandium surfaces under vacuum have been published. In this work, scandium films were treated with UV/ozone ex situ cleaning, ion sputtering, and thermal treatment under UHV. These surfaces were then exposed to different gases in the millitorr pressure range for extended periods of time. An optical emission spectrometer was used to monitor the composition of the dosing gas. Surfaces were analyzed before and after dosing. In concert with the gas analyses, the changes in surface chemistry of scandium could be correlated to the dosing species. This work discusses the X-ray photoelectron peak fitting of scandium and the changes in chemistry that can be observed through surface exposures.
Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.