Growth of nanocomposite films from accelerated C60 ions

被引：18

作者：

Pukha, V. E. ^{[1
]}

Zubarev, E. N. ^{[1
]}

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

Pugachov, A. T. ^{[1
]}

Jeong, S. H. ^{[2
]}

Nam, S. C. ^{[2
]}

机构：

[1] Natl Tech Univ Kharkov Polytech Inst, UA-61002 Kharkov, Ukraine

[2] GS NanoTech Co Ltd, Seoul 134848, South Korea

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2012年 / 45卷 / 33期

关键词：

MOLECULAR-DYNAMICS; MEMORY DEVICE; CARBON-FILMS; THIN-FILM; DEPOSITION; SPECTRA; IMPACT; ENERGY; RAMAN;

D O I：

10.1088/0022-3727/45/33/335302

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A beam of accelerated C-60 ions is used to deposit superhard (similar to 50 GPa) carbon films that exhibit high index plasticity (similar to 0.13-0.14) and high conductivity (up to 3000 S m(-1)). Transmission electron microscopy, Raman spectroscopy and x-ray photoelectron spectroscopy are subsequently used to study the microstructure and bond character of the deposited films. The films consist of textured graphite nanocrystals and diamond-like amorphous carbon (DLC). The graphene plane of the nanocrystals is aligned perpendicular to the film surface. It is shown that sp(2) bonds dominate in the films. The percentage of sp(3) bonds depends on the ion energy and the substrate temperature, and does not exceed 40%. The obtained results suggest that a new nanocomposite material consisting of oriented graphite nanocrystals reinforced by a DLC matrix is synthesized. A simple model is proposed to correlate the excellent mechanical properties with the observed structure.

引用

页数：9

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