Structure, stability, and stress properties of amorphous and nanostructured carbon films

被引：14

作者：

Fyta, MG ^{[1
]}

Mathioudakis, C ^{[1
]}

Kopidakis, G ^{[1
]}

Kehres, PC ^{[1
]}

机构：

[1] Univ Crete, Dept Phys, Iraklion 71003, Crete, Greece

来源：

THIN SOLID FILMS | 2005年 / 482卷 / 1-2期

关键词：

amorphous carbon; nanostructures; stresses; hardness;

D O I：

10.1016/j.tsf.2004.11.114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structural and mechanical properties of amorphous and nanocomposite carbon are investigated using tight-binding molecular dynamics (TBMD) and Monte Carlo (MC) simulations. In the case of amorphous carbon (a-C), we show that the variation of sp(3) fraction as a function of density is linear over the whole range of possible densities and that the bulk moduli follow closely the power-law variation suggested by Thorpe. We also review earlier work pertained to the intrinsic stress state of tetrahedral (ta-C) amorphous carbon. In the case of nanocomposites, we show that the diamond inclusions are stable only in dense amorphous tetrahedral matrices. Their hardness is considerably higher than that of pure amorphous carbon films. Fully relaxed diamond nanocomposites possess zero average intrinsic stress. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：56 / 62

页数：7

共 47 条

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