Physical vapor deposition of Ga on polycrystalline Au surfaces studied using X-ray photoelectron spectroscopy

Journal article


Publication Details

Author(s): Grabau M, Steinrück HP, Papp C
Journal: Surface Science
Publisher: ELSEVIER SCIENCE BV
Publication year: 2018
Volume: 677
Pages range: 254-257
ISSN: 0039-6028


Abstract

We studied the deposition of Ga onto polycrystalline Au surfaces at room temperature by X-ray photoelectron spectroscopy (XPS). We find the formation of an alloy film with an average composition of Au7Ga3 in the near surface region probed by XPS, as deduced from qualitative and quantitative analysis of the Ga 2p(3/2), Ga 3d and Au 4f signals. The formation of the Au7Ga3 alloy is reversed, and the original spectroscopic Au 4f fingerprint is restored upon exposure of the alloy to molecular oxygen at elevated pressures and elevated temperatures. We find the formation of a GaxOy film on top of the Au substrate, which goes along with a dealloying of the surface near Au7Ga3 alloy phase.


FAU Authors / FAU Editors

Grabau, Mathias Dr.
Lehrstuhl für Physikalische Chemie II
Papp, Christian PD Dr.
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II


How to cite

APA:
Grabau, M., Steinrück, H.-P., & Papp, C. (2018). Physical vapor deposition of Ga on polycrystalline Au surfaces studied using X-ray photoelectron spectroscopy. Surface Science, 677, 254-257. https://dx.doi.org/10.1016/j.susc.2018.07.011

MLA:
Grabau, Mathias, Hans-Peter Steinrück, and Christian Papp. "Physical vapor deposition of Ga on polycrystalline Au surfaces studied using X-ray photoelectron spectroscopy." Surface Science 677 (2018): 254-257.

BibTeX: 

Last updated on 2019-01-02 at 12:23