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题名: Logarithmic Size-Dependent Melting Temperature of Nanoparticles
作者: Liu, ZY;  Sui, XH;  Kang, K;  Qin, SJ
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
出版日期: 2015
卷号: 119, 期号:21, 页码:11929-11933
学科分类: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
DOI: http://dx.doi.org/10.1021/acs.jpcc.5b01188
通讯作者: Qin, SJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: This work describes the logarithmic term in the size-dependent melting temperature of nanoparticles. The Lindemann melting criterion and the thermal phonon contribution are intended primarily as a clear approach for our study of melting temperature. The ratio of the melting temperature (T-mn) of a nanoparticle to the bulk melting temperature (T-mb) is numerically evaluated up to the order of the inverse of the size L of a nanoparticle: T-mn/T-mb = 1 A/L. We show that the coefficient A is not a constant but has a logarithmic part. The logarithmic term is the dominate term in the factor A(L). Our investigation suggests the behavior of the size-dependent melting is T-mn/T-mb = 1 (B + C lnL)/(L- 2l(s)) where B and C are constant factors and ls is the number dimension of the surface layers reconstructed or premelted. The results present a challenge to reach a higher resolution in future thermal experiments in order to distinguish ln L/L behavior from the previously accepted pure 1/L behavior.
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
关键词[WOS]: SMALL PARTICLES ;  AL MATRIX ;  NANOCRYSTALS ;  THERMODYNAMICS ;  POINT ;  TIN
收录类别: SCI
项目资助者: [NNSF11421063]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20992
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Liu, ZY,Sui, XH,Kang, K,et al. Logarithmic Size-Dependent Melting Temperature of Nanoparticles[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(21):11929-11933.
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