High pressure transformation of single-crystal graphite to form molecular carbon-onions

被引：48

作者：

Blank, V. D. ^{[1
]}

Denisov, V. N. ^{[1
]}

Kirichenko, A. N. ^{[1
]}

Kulnitskiy, B. A. ^{[1
]}

Martushov, S. Yu ^{[1
]}

Mavrin, B. N. ^{[1
]}

Perezhogin, I. A. ^{[1
]}

机构：

[1] Technol Inst Superhard & Novel Carbon MAt, Moscow 142190, Russia

来源：

NANOTECHNOLOGY | 2007年 / 18卷 / 34期

关键词：

D O I：

10.1088/0957-4484/18/34/345601

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Carbon onions were formed in graphite in the diamond anvil high pressure cell under axial pressure combined with shear deformation at room temperature. The onions were ranging in size from 1-2 nm to 1-2 mu m and HREM studies have shown that the amount of their concentric shells tended to increase with pressure and deformation growth. Raman spectra were taken from large-size onions. Narrow bands found between 1400 and 1550 cm(-1) correspond to fullerene-related carbon materials. The splitting of the pentagonal pinch mode 1446-1489 cm(-1) is considered to be connected with the formation of heptagons.

引用

页数：4

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