Size effects on melting and wetting in the Ga-Pb nano-alloy

Marco Allione*, R. Kofman, F. Celestini, Y. Lereah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

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 in evidence.

Original languageEnglish (US)
Pages (from-to)207-210
Number of pages4
JournalEuropean Physical Journal D
Volume52
Issue number1-3
DOIs
StatePublished - Apr 1 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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