High-temperature evolution of linear carbon chains inside multiwalled nanotubes

被引：47
|
作者：
Cazzanelli, E. [1 ]
Castriota, M.
Caputi, L. S.
Cupolillo, A.
Giallombardo, C.
Papagno, L.
机构：
[1] Univ Calabria, Dipartimento Fis, I-87036 Cosenza, Italy
[2] INFM, CNR, LYCRIL, I-87036 Cosenza, Italy
[3] CEMIF, CAL, I-87036 Cosenza, Italy
[4] Ist Nazl Fis Nucl, Grp Coll Cosenza, I-87036 Cosenza, Italy
来源：
PHYSICAL REVIEW B | 2007年 / 75卷 / 12期
关键词：
D O I：
10.1103/PhysRevB.75.121405
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Multiwalled carbon nanotubes have been deposited on graphite cathodes by the arc discharge technique in a He atmosphere. A micro-Raman mapping, performed after scanning electron microscopy, reveals, in some regions of the sample, strong bands in the 1780-1860 cm(-1) range due to linear carbon chains inside the nanotubes. A temperature-dependent Raman study, up to about 1000 K, shows a strong but reversible decrease in their intensity. This phase transition behavior is explained as a temperature-driven reduction of the Peierls distortion of the linear carbon chain.
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页数：4
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