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Rolf Schäfer

The Chemical Potential of Metal Atoms in Small Particles

The chemical potential of metal atoms in isolated clusters has been investigated in dependence of cluster size by means of molecular beam experiments. For that purpose the heat of condensation, which is released during a cluster deposition experiment, is measured with novel microcalorimeters. The experimentally determined heat of condensation enables one to determine the formation enthalpies of the isolated particles. Additional temperature dependent measurements gives insight in the melting behaviour of the isolated systems. The investigations allow one to discuss the size-dependence of the chemical potential of metal atoms in small particles in comparison to predictions on the basis of a simple thermodynamic droplet model.

Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0942-9352
Volume: 217, 08/2003
Pages: 989

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