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

Yutaka Maniwa | Zendy; Ryuji Fujiwara | Zendy; Hiroshi Kira | Zendy; Hideki Tou | Zendy; Eiji Nishibori | Zendy; Masaki Takata | Zendy; Makoto Sakata | Zendy; Akihiko Fujiwara | Zendy; Xinluo Zhao | Zendy; Sumio Iijima | Zendy; Yukio Ando | Zendy

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

Author(s) -

Yutaka Maniwa,

Ryuji Fujiwara,

Hiroshi Kira,

Hideki Tou,

Eiji Nishibori,

Masaki Takata,

Makoto Sakata,

Akihiko Fujiwara,

Xinluo Zhao,

Sumio Iijima,

Yukio Ando

Publication year - 2001

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.64.073105

Subject(s) - atmosphere (unit) , diffraction , graphite , hydrogen , materials science , carbon nanotube , physics , nanotube , crystallography , atomic physics , nanotechnology , optics , composite material , thermodynamics , chemistry , quantum mechanics

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.

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