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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/4750

Title: C_<70> Molecular Stumbling inside Single-Walled Carbon Nanotubes
Authors: Maniwa, Yutaka
Kataura, Hiromichi
Abe, Masatoshi
Fujiwara, Akihiko
Fujiwara, Ryuji
Kira, Hiroshi
Tou, Hideki
Suzuki, Shinzo
Achiba, Yohji
Nishibori, Eiji
Takata, Masaki
Sakata, Makoto
Suematsu, Hiroyoshi
Keywords: thermal expansion
carbon nanotube
phase transition
Issue Date: 2003
Publisher: 日本物理学会
Magazine name: Journal of the Physical Society of Japan
Volume: 72
Number: 1
Start page: 45
End page: 48
DOI: 10.1143/JPSJ.72.45
Abstract: We report the structural study of C_<70>-one-dimensional (1D) crystal formed inside single-walled carbon nanotubes (SWNTs). X-ray diffraction measurements were performed between 100 K and 999 K on C_<70>-encapsulated SWNTs with an average diameter of 1.37 nm. Two different domains, where the dominant alignment of C_<70> molecular long axis is standing or lying with respect to the tube axis, were observed; the ratio of the standing to the lying C_<70>-domains is roughly 7:3. Thermal expansion of interfullerene distance gave no evidence for orientational phase transitions, not as in the 3D crystals. Instead, the long-range order of the standing C_<70>-alignment was thermally destroyed with an activation energy of 39±4 meV. The results imply the importance of either the 1D fluctuation or the tube-C_<70> interaction at finite temperatures.
Rights: This is the author's version of the work. It is posted here by permission of The Physical Society of Japan. Copyright (C) 2003 The Physical Society of Japan. Yutaka Maniwa, Hiromichi Kataura, Masatoshi Abe, Akihiko Fujiwara, Ryuji Fujiwara, Hiroshi Kira, Hideki Tou, Shinzo Suzuki, Yohji Achiba, Eiji Nishibori, Masaki Takata, Makoto Sakata and Hiroyoshi Suematsu, Journal of the Physical Society of Japan, 72(1), 2003, 45-48. http://jpsj.ipap.jp/link?JPSJ/72/45/
URI: http://hdl.handle.net/10119/4750
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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