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Irreversible pressure-induced transformation of boron nitride nanotubes
Surajit Saha1, Vikram Gadagkar, Prabal K Maiti
1Department of Physics, Indian Institute of Science, Bangalore 560012, India.
Abstract:
We have used Raman spectroscopy to study the behavior of multi-walled boron nitride nanotubes and hexagonal boron nitride crystals under high pressure. While boron nitride nanotubes show an irreversible transformation at about 12 GPa, hexagonal boron nitride exhibits a reversible phase transition at 13 GPa. We also present molecular dynamics simulations which suggest that the irreversibility of the pressure-induced transformation in boron nitride nanotubes is due to the polar nature of the bonds between boron and nitrogen.
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