Resonant X-ray scattering from the surface of a dilute liquid Hg-Au alloy

E. Dimasi, H. Tostmann, B. M. Ocko, P. Huber, O. G. Shpyrko, P. S. Pershan, M. Deutsch

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)183-188
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume590
StatePublished - 2000
Externally publishedYes
EventThe 1999 MRS Fall Meeting - Symposium R 'Applications of Synchrotron Radiation Techniques to Materials Science V' - Boston, MA, USA
Duration: 29 Nov 19993 Dec 1999

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