Open AccessPhase transition from amorphous carbon to diamond nanocrystalline induced by 40Ar+
Author(s) -
Hu Jian-Gang,
Zhenxia Wang,
Yong Zhen-Zhong,
Qintao Li,
ZY Zhu
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.6538
Subject(s) - materials science , nucleation , nanocrystalline material , crystallite , raman spectroscopy , amorphous carbon , diamond , amorphous solid , nanocrystal , transmission electron microscopy , diffraction , high resolution transmission electron microscopy , electron diffraction , phase transition , carbon fibers , nanotechnology , crystallography , condensed matter physics , optics , chemistry , composite material , physics , composite number , organic chemistry , metallurgy
Large-scale diamond nanocrystals of different sizes were synthesized by 60 keV 40Ar+ irradiation on amorphous carbon. Investigated by high-resolution transmission electron microscopy, energy diffraction X-ray spectrum, electron diffraction and Raman spectrum, the diamond crystallites embeded in graphitic film have a high nucleation density (about 1013/cm2) and can grow to large sizes even of the micrometer order. The mechanism of phase transition is discussed preliminarily.