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Behavior of carbon nanotubes under high pressure and high temperature

Published online by Cambridge University Press:  31 January 2011

D. S. Tang ,
L. C. Chen ,
L. J. Wang ,
L. F. Sun ,
Z. Q. Liu ,
G. Wang ,
W. Y. Zhou  and
S. S. Xie
D. S. Tang
Affiliation:
Institute of Physics & Center of Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
L. C. Chen
Affiliation:
Institute of Physics & Center of Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
L. J. Wang
Affiliation:
Institute of Physics & Center of Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
L. F. Sun
Affiliation:
Institute of Physics & Center of Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
Z. Q. Liu
Affiliation:
Institute of Physics & Center of Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
G. Wang
Affiliation:
Institute of Physics & Center of Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
W. Y. Zhou
Affiliation:
Institute of Physics & Center of Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
S. S. Xie*
Affiliation:
Institute of Physics & Center of Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
*
a)Address all correspondence to this author.ssxie@aphy.iphy.ac.cn
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Abstract

The structural changes of carbon nanotubes induced by high pressure and high temperature were investigated by means of x-ray diffraction, Raman scattering, scanning electron microscopy, and transmission electron microscopy. It is shown that, with increasing pressure and temperature, the lattice constant d002 of tubes shortens, and then tubes collapse into tapelike ones; at the same time the C–C bonds at high curvature break, which lead the tapelike tubes to break into graphite sheets as diamond crystallization centers. Compared with graphite, the diamond particles from carbon nanotubes have many defects as the trace of tubes.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 2 , February 2000 , pp. 560 - 563
Copyright
Copyright © Materials Research Society 2000

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