Electromagnetic Properties of Inner Double Walled Carbon Nanotubes Investigated by Nuclear Magnetic Resonance

Figure 1

Raman spectra excited with an argon ion laser (633 nm) of (I) magnetically purified SWNTs, (II) peapods, and (III) DWNTs obtained by annealing peapods at 1250°C for 24 hours. Inset shows the TEM image of DWNTs.