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Experimental Determination of the Melting Point and Heat Capacity for a Free Cluster of 139 Sodium Atoms
Abstract
The heat capacity of a free cluster has been determined from the temperature dependence of its photofragmentation mass spectrum. The data for the spherical sodium cluster ${\mathrm{Na}}_{N}^{+}$, with $N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}139$, show a maximum at 267 K, which is interpreted as the solid-to-liquid phase transition in this finite system. The melting point lies 104 K, or 28% lower than that of bulk sodium. The latent heat of fusion is reduced by 46%.
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Cites
Size effect on the melting temperature of gold particles
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Size-Dependent Melting Properties of Small Tin Particles: Nanocalorimetric Measurements
Lai, S. L., Guo, J. Y., Petrova, V., Ramanath, G., & Allen, L. H. (1996) · Physical Review Letters · doi:10.1103/physrevlett.77.99 · Cited by 898
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Cited by
Structural properties of nanoclusters: Energetic, thermodynamic, and kinetic effects
Baletto, F., & Ferrando, R. (2005) · Reviews of Modern Physics · doi:10.1103/revmodphys.77.371 · Cited by 1,811
Global Optimization of Clusters, Crystals, and Biomolecules
Wales, D. J., & Scheraga, H. A. (1999) · Science · doi:10.1126/science.285.5432.1368 · Cited by 1,114
Melting and superheating of crystalline solids: From bulk to nanocrystals
Mei, Q. S., & Lu, K. (2007) · Progress in Materials Science · doi:10.1016/j.pmatsci.2007.01.001 · Cited by 592
Libbrecht, K. G. (2005) · Reports on Progress in Physics · doi:10.1088/0034-4885/68/4/r03 · Cited by 587
Negative Heat Capacity for a Cluster of 147 Sodium Atoms
Schmidt, M., Kusche, R., Hippler, T., Donges, J., Kronmüller, W., von Issendorff, B., & Haberland, H. (2001) · Physical Review Letters · doi:10.1103/physrevlett.86.1191 · Cited by 332
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Metadata
- Authors
- Schmidt, M., Kusche, R., Kronmüller, W., von Issendorff, B., & Haberland, H.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1997-07-07
- Volume
- 79
- Issue
- 1
- Pages
- 99-102
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2085538565
- Cited by
- 403
- References
- 9
- FWCI
- 16.22
- Type
- journal article
- Language
- en
- Open access
- closed
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