ISSN:
1434-6079
Keywords:
36.40.+d
;
61.14.−x
;
61.16.Di
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The structures of unsupported ultrafine silver particles in a molecular beam, produced by the inert-gas-aggregation technique, have been studied by electron diffraction. The dependence of particle structure on evaporation-source temperature (1260 °C ≤ Tc ≤ 1400 °C) has been investigated. Particles in the beam are found to divide into: a dominating proportion of small, decahedral particles, and a small proportion of unexpectedly large icosahedral particles, larger than any previously reported free icosahedra. The mean diameters are 2–3 nm and 7–10 nm, respectively. F.c.c. particles, with an average diameter of ∼6 nm, appear in significant numbers when Tc≥1350 °C. The particles' mean sizes and distribution widths increase with Tc. Electron microscope observations of particles collected from the beam support these findings.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01425623
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