Open AccessEFFECT OF DIFFERENT INERT GASES AND PRESSURES ON THE ELECTRON SPIN RESONANCE OF CARBON NANOTUBES
Author(s) -
Haiyan Zhang,
Yunbo He,
Xue-Xin-Min,
Liang Li-Zheng,
Jing Wang
Publication year - 1999
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.48.1354
Subject(s) - carbon nanotube , materials science , electron paramagnetic resonance , inert gas , argon , buffer gas , inert , helium , electric arc , laser linewidth , atomic physics , analytical chemistry (journal) , nanotechnology , nuclear magnetic resonance , composite material , chemistry , organic chemistry , physics , electrode , laser , optics
The nanotubes were produced by dc arc-discharge method through helium and argon gas at a controlled pressure ranging from 10 kPa to 80 kPa. The crude nanotubes were oxidized at 770℃ until about 1% of the weight remained and the purified nanotubes were obtained. The electron spin resonance (ESR) of purified carbon nanotubes prepared under different inert gases with different pressures has been measured. The dependence of ESR line shape, linewidth, g value and spin density of the purified nanotubes on different inert gases and pressure is found and discussed.