Multiwalled carbon nanotubes grown in hydrogen atmosphere: An x-ray diffraction study

Journal Article · Wed Aug 15 00:00:00 EDT 2001 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.64.073105· OSTI ID:40230854

Maniwa, Yutaka; Fujiwara, Ryuji; Kira, Hiroshi; Tou, Hideki; Nishibori, Eiji; Takata, Masaki; Sakata, Makoto; Fujiwara, Akihiko; Zhao, Xinluo; Iijima, Sumio ^[1]

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1. and others

X-ray diffraction study of multiwalled carbon nanotube (MWNT) grown by arc discharge in hydrogen atmosphere is presented. It is found that the thermal-expansion coefficient along the radial direction of MWNT is widely distributed in a range from 1.6 x 10{sup -5} K{sup -1} to 2.6 x 10{sup -5} K{sup -1}, indicating the existence of both of Russian doll MWNT and highly defective MWNT. Russian doll MWNT is suggested to have the outer diameter less than {approx}100 Aa. Thicker MWNT's are typically highly defective, and may have the jelly roll (scroll) or defective polygonal structure consisting of flat graphite domains.

• Sponsoring Organization: (US)
• OSTI ID: 40230854
• Journal Information: Physical Review B, Vol. 64, Issue 7; Other Information: DOI: 10.1103/PhysRevB.64.073105; Othernumber: PRBMDO000064000007073105000001; 021131PRB; PBD: 15 Aug 2001; ISSN 0163-1829
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
CARBON
GRAPHITE
HYDROGEN
THERMAL EXPANSION
X-RAY DIFFRACTION