Yutaka Maniwa et al 2003 New J. Phys. 5 127 doi:10.1088/1367-2630/5/1/127
A one-dimensional Ising model for C70 molecular ordering in C70-peapods
Focus on Carbon NanotubesYutaka Maniwa1,2, Hiromichi Kataura1, Kazuyuki Matsuda1 and Yutaka Okabe1
Show affiliationsPart of Focus on Carbon Nanotubes
A description using the Ising model is proposed for the C70 molecular orientational ordering in C70 one-dimensional crystals formed inside single-wall carbon nanotubes (SWNTs). It is shown that the observed standing and lying alignments can be deduced naturally from the present Ising model where the SWNT diameter effectively changes the 'effective field' acting on C70 molecules. The thermal expansion of the C70 intermolecular distance is well described by this model. The possibility of antiferro-orientational ordering is also suggested.
- PACS
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05.50.+q Lattice theory and statistics (Ising, Potts, etc.)
61.46.-w Structure of nanoscale materials
65.80.+n Thermal properties of small particles, nanocrystals, nanotubes
- Subjects
- Dates
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Issue 1 (October 2003)
Received 4 August 2003
Published 3 October 2003
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A one-dimensional Ising model for C70 molecular ordering in C70-peapods
Yutaka Maniwa et al 2003 New J. Phys. 5 127
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