Size-dependent melting temperature of nanoparticles based on cohesive energy

被引：3
|
作者：
Huo, Kai-Tuo [1 ]
Chen, Xiao-Ming [1 ]
机构：
[1] Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian 710119, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2014年 / 28卷 / 19期
基金：
中国国家自然科学基金;
关键词：
Melting temperature; cohesive energy; nanoparticles; THERMODYNAMIC PROPERTIES; METALLIC NANOPARTICLES; IRON NANOPARTICLES; MOLECULAR-DYNAMICS; SMALL PARTICLES; SURFACE; INDIUM; POINT; NANOWIRES; BEHAVIOR;
D O I：
10.1142/S0217984914501577
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Size-dependent melting temperature of metallic nanoparticles is studied theoretically based on cohesive energy. Three factors are introduced in the present model. The k factor, i.e. efficiency of space filling of crystal lattice is defined as the ratio between the volume of the atoms in a crystal cell and that of the crystal cell. The beta factor is defined as the ratio between the cohesive energy of surface atom and interior atom of a crystal. The q(s) factor represents the packing fraction on a surface crystalline plane. Considering the beta, q(s) and k factors, the relationship between melting temperature and nanoparticle size is discussed. The obtained model is compared with the reported experimental data and the other models.
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页数：8
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