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Resonant X-ray scattering from the surface of a dilute liquid Hg-Au alloy
Publikationstyp
Conference Paper
Date Issued
1999-11
Sprache
English
Journal
Volume
590
Start Page
183
End Page
188
Citation
Materials Research Society Symposium, Symposium R 'Applications of Synchrotron Radiation Techniques to Materials Science V'- Proceedings 590: 183-188 (2000-12-03)
Contribution to Conference
Scopus ID
Publisher
MRS
We present the first resonant x-ray reflectivity measurements from a liquid surface. The surface structure of the liquid Hg-Au alloy system just beyond the solubility limit of 0.14at% Au in Hg had previously been shown to exhibit a unique surface phase characterized by a low-density surface region with a complicated temperature dependence. In this paper we present reflectivity measurements near the Au LIII edge, for 0.2at% Au in Hg at room temperature. The data are consistent with a concentration of Au in the surface region that can be no larger than about 30at%. These results rule out previous suggestions that pure Au layers segregate at the alloy surface.
DDC Class
530: Physik