Comparative High Pressure Raman Study of Boron Nitride Nanotubes and Hexagonal Boron Nitride
arXiv:cond-mat/0603223 · doi:10.1016/j.cplett.2006.01.062
Abstract
High pressure Raman experiments on Boron Nitride multi-walled nanotubes show that the intensity of the vibrational mode at ~ 1367 cm-1 vanishes at ~ 12 GPa and it does not recover under decompression. In comparison, the high pressure Raman experiments on hexagonal Boron Nitride show a clear signature of a phase transition from hexagonal to wurtzite at ~ 13 GPa which is reversible on decompression. These results are contrasted with the pressure behavior of carbon nanotubes and graphite.
13 pages and 5 figures