Sputtering of neutral clusters from silver-gold alloys

Title: Sputtering of neutral clusters from silver-gold alloys
Creator: King, B. V.; Moore, J. F.; Veryovkin, I. V.; Zinovev, A. V.; Pellin, M. J.
Relation: Applied Surface Science Vol. 256, Issue 4, p. 991-994
Publisher Link: http://dx.doi.org/10.1016/j.apsusc.2009.05.084
Publisher: Elsevier
Resource Type: journal article
Date: 2009
Description: Polycrystalline Ag, Ag₂₀Au₈₀, Ag₄₀Au₆₀, Ag₈₀Au₂₀ and Au samples were bombarded with 15 keV Ar⁺ at 60° incidence and the resulting secondary neutral yield distribution was studied by non-resonant laser postionisation mass spectrometry. Neutral clusters containing up to 21 atoms were observed for the targets. The yield of neutral clusters, AgmAun−m, containing n atoms, Yn, was found to follow a power in n, i.e. Ynαn−δ, where the exponent δ varied from 3.2 to 4.0. For a fixed n, the cluster yields showed a variation with number of gold atoms similar to that expected for a binomial distribution. In addition, the cluster compositions from the sputtered alloys were indicative of sputtering from a gold rich surface.
Subject: sputtering; clusters; SNMS; photoionisation
Identifier: uon:7210
Identifier: http://hdl.handle.net/1959.13/806800
Identifier: ISSN:0169-4332
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