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Melting of Pb nanocrystals
Abstract
The size-dependent melting and surface melting of Pb nanocrystals is demonstrated by x-ray powder diffraction in ultrahigh vacuum. Whereas some prior studies have measured the size-dependent melting temperature via the diffraction intensity, it is shown here that crystallite reorientation makes the diffraction intensity an unreliable indicator of melting. Instead of the diffraction intensity, the diffraction peak shape reveals the size-dependent melting via changes in the crystallite size distribution. Measurements showed that the melting temperature varies inversely with the crystallite size and quantitatively favors the liquid-skin melting model over the homogeneous melting model. Surface melting is demonstrated via the reversible growth of a 0.5 nm liquid skin on 50 nm crystallites just below the size-dependent melting temperature.
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Citations
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
Size dependence of nanostructures: Impact of bond order deficiency
Sun, C. Q. (2007) · Progress in Solid State Chemistry · doi:10.1016/j.progsolidstchem.2006.03.001 · Cited by 873
Size-Dependent Melting of Silica-Encapsulated Gold Nanoparticles
Dick, K., Dhanasekaran, T., Zhang, Z., & Meisel, D. (2002) · Journal of the American Chemical Society · doi:10.1021/ja017281a · Cited by 549
Metadata
- Authors
- Peters, K. F., Cohen, J. B., & Chung, Y.-W.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 1998-06-01
- Volume
- 57
- Issue
- 21
- Pages
- 13430-13438
- ISSN
- 0163-1829 (ISSN-L)
- 1095-3795
- OpenAlex
- W1997854744
- Cited by
- 241
- References
- 0
- FWCI
- 6.07
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Melting of Pb nanocrystals. https://app.cochat.ai/papers/10.1103/physrevb.57.13430
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- Peters, K. F., Cohen, J. B., & Chung, Y.-W. (1998). Melting of Pb nanocrystals. Physical Review B. https://doi.org/10.1103/physrevb.57.13430
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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