Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/1252
Title: Probing the sp2 dependence of elastic moduli in ultrahard diamond films
Authors: Fyta, Maria G. 
Hadjisavvas, George C. 
Kelires, Pantelis C. 
Keywords: Carbon
Ultrananocrystalline diamond
Amorphous materials
Nanocomposite
Grain boundaries
Elastic properties
Issue Date: 2007
Publisher: Elsevier B.V
Source: Diamond and Related Materials. Volume 16, Issue 8, August 2007, Pages 1643-1647
Abstract: The structural and elastic properties of diamond nanocomposites and ultrananocrystalline diamond films (UNCD) are investigated using both empirical potentials and tight-binding schemes. We find that both materials are extremely hard, but their superb diamondlike properties are limited by their sp2 component. In diamond composites, the sp2 atoms are found in the matrix and far from the interface with the inclusion, and they are responsible for the softening of the material. In UNCD, the sp2 atoms are located in the grain boundaries. They offer relaxation mechanisms which relieve the strain but, on the other hand, impose deformations that lead to softening. The higher the sp2 component the less rigid these materials are.
URI: http://ktisis.cut.ac.cy/handle/10488/1252
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2007.02.014
Rights: © 2007 Elsevier B.V.
Appears in Collections:Άρθρα/Articles

Show full item record

SCOPUSTM   
Citations 20

12
checked on Feb 4, 2017

WEB OF SCIENCETM
Citations 20

10
checked on Jun 23, 2017

Page view(s)

8
Last Week
0
Last month
1
checked on Jun 27, 2017

Google ScholarTM

Check

Altmetric


This item is licensed under a Creative Commons License Creative Commons