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Science 9 December 1994:
Vol. 266. no. 5191, pp. 1683 - 1685
DOI: 10.1126/science.266.5191.1683
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Articles

Doping Graphitic and Carbon Nanotube Structures with Boron and Nitrogen

O. Stephan 1, P. M. Ajayan 1, C. Colliex 1, Ph. Redlich 1, J. M. Lambert 2, P. Bernier 2, and P. Lefin 2

1 Laboratoire de Physique des Solides, URA 002, Université Paris-sud, Batiment 510, 91405 Orsay, France
2 Groupe de Dynamique des Phases Condensees, URA 233, Universite Montpellier II Sciences et Techniques du Languedoc, 34095 Montpellier, France

Composite sheets and nanotubes of different morphologies containing carbon, boron, and nitrogen were grown in the electric arc discharge between graphite cathodes and amorphous boron-filled graphite anodes in a nitrogen atmosphere. Concentration profiles derived from electron energy-loss line spectra show that boron and nitrogen are correlated in a one-to-one ratio; core energy-loss fine structures reveal small differences compared to pure hexagonal boron nitride. Boron and carbon are anticorrelated, suggesting the substitution of boron and nitrogen into the carbon network. Results indicate that singlephaase CyBxNx as well as separated domains (nanosize) of boron nitride in carbon networks may exist.

Submitted on August 16, 1994
Accepted on October 5, 1994


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Coaxial Nanocable: Silicon Carbide and Silicon Oxide Sheathed with Boron Nitride and Carbon.
Y. Zhang, K. Suenaga, C. Colliex, and S. Iijima (1998)
Science 281, 973-975
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Synthesis of Nanoparticles and Nanotubes with Well-Separated Layers of Boron Nitride and Carbon.
K. Suenaga, C. Colliex, N. Demoncy, A. Loiseau, H. Pascard, and F. Willaime (1997)
Science 278, 653-655
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Boron Nitride Nanotubes.
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Science 269, 966-967
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