Three distinctive melting mechanisms in isolated nanoparticles

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	Three distinctive melting mechanisms in isolated nanoparticles
	S. J. Zhao; S. Q. Wang; D. Y. Cheng; H. Q. Ye
	2001
发表期刊	Journal of Physical Chemistry B
ISSN	1520-6106
卷号	105 期号:51 页码:12857-12860
摘要	The melting properties of size-selected isolated silver nanoparticles of N = 13-3871 atoms are studied by using molecular dynamics simulations, Three distinctive melting mechanisms are identified. The melting of Ag258-3871 can be explained well by the surface premelting models (SPMs), while the "melting" of Ag13-178 may be described as a transition from a low-energy solidlike structure at low temperatures to a higher-energy liquidlike structure at high temperatures. Acting as a connecting link between such two distinctive melting mechanisms, a new intermediate melting mechanism, in which the melting temperature T-m depresses very slowly while the latent heat of fusion Deltau(ls) has a great enhancement with N decreasing, is identified in Ag120-240.
部门归属	chinese acad sci, inst met res, atom imaging solids lab, shenyang 110016, peoples r china.;zhao, sj (reprint author), chinese acad sci, inst met res, atom imaging solids lab, shenyang 110016, peoples r china
关键词	Molecular-dynamics Small Particles Clusters Transition Liquid
URL	查看原文
WOS记录号	WOS:000173079500021
引用统计	被引频次：94[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36930
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. J. Zhao,S. Q. Wang,D. Y. Cheng,et al. Three distinctive melting mechanisms in isolated nanoparticles[J]. Journal of Physical Chemistry B,2001,105(51):12857-12860.
APA	S. J. Zhao,S. Q. Wang,D. Y. Cheng,&H. Q. Ye.(2001).Three distinctive melting mechanisms in isolated nanoparticles.Journal of Physical Chemistry B,105(51),12857-12860.
MLA	S. J. Zhao,et al."Three distinctive melting mechanisms in isolated nanoparticles".Journal of Physical Chemistry B 105.51(2001):12857-12860.