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

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

Brookhaven National Laboratory
Harvard University
Bar-Ilan University

Research output: Contribution to journal › Conference article › peer-review

5 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 L_III 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 language	English
Pages (from-to)	183-188
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	590
State	Published - 2000
Externally published	Yes
Event	The 1999 MRS Fall Meeting - Symposium R 'Applications of Synchrotron Radiation Techniques to Materials Science V' - Boston, MA, USA Duration: 29 Nov 1999 → 3 Dec 1999

Cite this

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title = "Resonant X-ray scattering from the surface of a dilute liquid Hg-Au alloy",

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.",

author = "E. Dimasi and H. Tostmann and Ocko, \{B. M.\} and P. Huber and Shpyrko, \{O. G.\} and Pershan, \{P. S.\} and M. Deutsch",

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T1 - Resonant X-ray scattering from the surface of a dilute liquid Hg-Au alloy

AU - Dimasi, E.

AU - Tostmann, H.

AU - Ocko, B. M.

AU - Huber, P.

AU - Shpyrko, O. G.

AU - Pershan, P. S.

AU - Deutsch, M.

PY - 2000

Y1 - 2000

N2 - 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.

AB - 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.

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AN - SCOPUS:0033699649

SN - 0272-9172

VL - 590

SP - 183

EP - 188

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - The 1999 MRS Fall Meeting - Symposium R 'Applications of Synchrotron Radiation Techniques to Materials Science V'

Y2 - 29 November 1999 through 3 December 1999

ER -

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

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