Journal
DIAMOND AND RELATED MATERIALS
Volume 16, Issue 4-7, Pages 1250-1253Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2006.11.103
Keywords
C-60 fullerenes; multi-wall carbon nanombes (MWCNT); high pressure; X-ray Raman scattering
Ask authors/readers for more resources
X-ray Raman scattering experiments were performed on C-60 fullerenes and multi-wall carbon nanotubes (MWCNT) up to 20 GPa and 25 GPa using a diamond anvil cell and synchrotron radiation at HPCAT, Advanced Photon Source. The intensity of the near edge peaks representing sp(2) hybridization (pi*) decreases with increasing pressure in both materials. Around 13 GPa the X-ray Raman spectra of C-60 completely transformed to sp(3) type bonding leading to diamond-like phase. Similar features have been observed in MWCNT at 16 GPa indicating the formation of strong interlayer covalent bonds. Our experiments are in excellent agreement with recent theoretical simulations reported on the mechanical behaviour of compressed nanotubes and provide direct experimental evidence for bond switching of these carbonaceous systems at high pressures. (c) 2006 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available