碳纳米管的电子自旋共振研究

The Electron Spin Resonance of the Purified Carbon Nanotubes

在直流碳弧法中，用氦（He）气氛和氩（Ar）气氛制备极纳米管，在770℃下将阴极沉积物氧化至原重量的1％；得到纯的碳纳米管，测量不同气氛及压强下制备的碳纳米管的室温电子自旋共振（ESR）谱，讨论了不同惰性气氛及压强对所制备碳管的ESR谱线型、g因子、线宽的影响。

The carbon nanotubes were produtal by dc arc-discharge method through helium and argon gas respectivey at a controlled pressure. The crude nanotubes wer oxidind at 770℃ until about 1% of the weight remained and the purified nanotubes were obtained, The electron spin resonance spectrum of purified carbon nanotubes prepatal under different inert gases and their pressures have been measured.The dependence of the ESR line shape,linewidth, g vahie of the purified nanotubes on the inert gases and their presstires is found and discussed.