Journal
EUROPEAN PHYSICAL JOURNAL D
Volume 52, Issue 1-3, Pages 207-210Publisher
SPRINGER
DOI: 10.1140/epjd/e2009-00072-2
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Ga-Pb alloys with 15 at% Pb mean concentration have been prepared at the nanoscale by means of evaporation-condensation technique in ultra high vacuum conditions. Transmission electron microscope images indicate that at room temperature, the system is a two-components breath figure composed of liquid Ga, nanodrops containing Pb nanocrystals. Some thermodynamic properties of this nano-alloy are investigated for different. temperatures and particle sizes. The results obtained put in evidence a large modification of the Ga-Pb bulk phase diagram: a, decrease of the melting temperatures of the two components as well as the ones of the miscibility gap. Changes in the microscopic structure Of the system as a function of temperature have been investigated and a full wetting transition from a dry to a completely wet state has been put ill evidence.
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