科研之友
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摘要
A self-consistent statistical method is used to describe size effects on melting of free metallic nanocrystals. As shown, the depression of the melting temperature of free small particles is mainly caused by a lower coordination number for surface atoms than that for the interior atoms. Assuming the melting point to be approximately equal to the point of high-temperature instability of the solid state, we computed the melting temperatures of Au nanocrystals (spherical particles and thin films) as functions of their sizes, and the results are compared with experimental data.
- 出版日期2010-4
