Specific heat of single-walled carbon nanotubes: A lattice dynamics study

被引：14

作者：

Cao, JX ^{[1
]}

Yan, XH

Xiao, Y

机构：

[1] Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Inst Mech & Mat Engn, Xiangtan 411105, Peoples R China

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 09期

关键词：

carbon nanotubes; specific heat; lattice dynamics;

D O I：

10.1143/JPSJ.72.2256

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In terms of the symmetry of single-walled carbon nanotubes, we present a two-atom unit cell model to study the lattice dynamics and the thermal proper-ties. Different behavior of size dependence of specific heat is found at different temperature. At low temperature, it is found that the specific heat is proportional to the tubule diameter. However, at high temperature the specific heat is inversely proportional to the square of the diameter. The fit for specific heat at 300 K is C-V = 686.69 - 9.0/d(2) (J/Kg K).

引用

页码：2256 / 2259

页数：4

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