Thermodynamic superheating of low-dimensional metals embedded in matrix

被引：18
|
作者：
Jiang, Q
Liang, LH
Li, JC
机构：
[1] Jilin Univ, Minist Educ, Key Lab Automobile Mat, Changchun 130025, Peoples R China
[2] Jilin Univ, Dept Mat Sci & Engn, Changchun 130025, Peoples R China
来源：
VACUUM | 2003年 / 72卷 / 03期
关键词：
nanocrystals; melting temperature; melting entropy; surface;
D O I：
10.1016/S0042-207X(03)00148-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A simple model for size-dependent melting temperature and melting entropy of nanocrystals embedded in a matrix is introduced to interpret the superheating phenomenon. The model predicts not only melting temperature and the melting entropy increase for embedded nanocryst As as the size of the nanocrystals decreases, but also melting temperature and the melting entropy depression for free-standing nanocrystals with reducing size. The model is supported by available experimental results of nanoparticles and thin films. (C) 2003 Elsevier Ltd. All rights reserved.
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页码：249 / 255
页数：7
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