X-ray irradiation effect of double walled carbon nanotube
- 194 Downloads
We have studied double-walled carbon nanotube (DWNT) irradiated by soft X-ray by Raman scattering spectroscopy and the spectral characteristics are compared to single-walled carbon nanotube (SWNT) irradiated under the same condition. We proved that DWNT is more stable for the X-ray induced defect formation than SWNT. Moreover, we found that the outer tube of DWNT was more sensitive on X-ray irradiation than the inner tube. The defect was recovered by annealing in Ar at lower temperature than that of SWNT. Based on these results, we inferred that X-ray irradiation leads to formation of interstitial-vacancy pairs, Frenkel defects, in carbon nanotube. The interstitial-vacancy separation on the inner tube of DWNT is conceivably shorter than that of the outer tube.
KeywordsInterstitial Atom Outer Tube Radial Breathing Mode Frenkel Pair Frenkel Defect
- 1.S.V. Rotkin, S. Sunramoney, Applied Physics of Carbon Nanotubes -Fundamentals of Theory, Optics and Transport Devices (Springer, Berlin, 2005)Google Scholar
- 2.S. Reich, C. Thomsen, J. Maultzsch, Carbon nanotubes: Basic Concepts and Physical Properties (Wiley-VCH, Weinheim, 2004)Google Scholar
- 11.H. Ago, K. Nakamura, S. Imamura, M. Tsuji, Chem. Phys. Lett. 391, 208 (2001) Google Scholar
- 17.A.V. Krasheninnikov, K. Nordlund, J. Keinonen, Phys. Rev. Lett. 65, 165423 (2002) Google Scholar