Electron-irradiation-induced ordering in tetrahedral-amorphous carbon films

被引：0
|
作者：
Yajima, A [1 ]
Abe, S
Fuse, T
Mera, Y
Maeda, K
Suzuki, K
机构：
[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1136856, Japan
[2] Univ Tokyo Komaba, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2002年 / 388卷
关键词：
tetrahedral amorphous carbon; nanotubes; graphite; electronic excitations; transmission electron microscopy; electron energy loss spectroscopy;
D O I：
10.1080/10587250215274
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We investigated in detail the structural ordering developed in films of tetrahedral amorphous carbon (ta-C) under 100 kV to 200 kV electron beams of transmission electron microscopes (TEM). From systematic measurements of electron diffraction and electron energy loss spectra (EELS), in selected areas the ordered structures were concluded to be multi-walled carbon nanotubes or warped graphitic platelets containing a high density of defects. The electron-irradiation-induced ordering can neither be accounted for by a sample heating nor be explained only by displacement damage caused by 200 kV electron irradiation. The essential process, that is enhanced, appears the atomic diffusion induced by electronic excitations due to the electron irradiation.
引用
收藏
页码：561 / 565
页数：5
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