Karmakar, Sukanta and Sharma, Surinder M. and Teredesai, P. V. and Muthu, D. V. S. and Govindaraj, Achutharao and Sikka, S. K. and Sood, A. K. (2003) Structural changes in single-walled carbon nanotubes under non-hydrostatic pressures: x-ray and Raman studies. New Journal Of Physics, 5 . p. 143.
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://www.iop.org/EJ/abstract/1367-2630/5/1/143/
Using in situ x-ray diffraction and Raman scattering techniques, we have investigated the behaviour of single-walled carbon nanotubes bundles under non-hydrostatic pressures. It is seen that the diffraction line corresponding to the two-dimensional triangular lattice in the bundles is not reversible for pressures beyond 5 GPa, in sharp contrast to earlier results under hydrostatic pressure conditions. Most interestingly, radial breathing and tangential Raman modes of the pressure-cycled samples from 21 and 30 GPa match very well with those of the starting sample. Raman and x-ray results put together clearly suggest that the ordering of tubes in the bundles is only marginally regained with a very short coherence length on decompression.
Repository Staff Only: item control page