High-pressure Raman spectroscopy of carbon onions and nanocapsules

被引：24

作者：

Guo, J. J. ^{[1
]}

Liu, G. H. ^{[2
]}

Wang, X. M. ^{[2
]}

Fujita, T. ^{[1
]}

Xu, B. S. ^{[2
]}

Chen, M. W. ^{[1
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Taiyuan Univ Technol, Minist Educ, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 05期

关键词：

elasticity; hardness; nanostructured materials; Raman spectra; ARC-DISCHARGE; SCATTERING; NANOTUBES; GRAPHITE; C-60; SINGLE; MODES; PHASE;

D O I：

10.1063/1.3200246

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report high-pressure Raman spectra of carbon onions and nanocapsules investigated by diamond anvil cell experiments. The pressure coefficient and elastic behavior of carbon onions and nanocapsules are found to be very similar to those of multiwall carbon nanotubes. Additionally, detectable structure changes, particularly the collapse of the concentric graphite structure, cannot been seen at pressures as high as similar to 20 GPa, demonstrating that carbon onions and nanocapsules have significant hardness and can sustain very high pressures.

引用

页数：3

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