High-temperature evolution of linear carbon chains inside multiwalled nanotubes

被引：48

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.

引用

页数：4

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