Irreversible pressure-induced transformation of boron nitride nanotubes.
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.
Saha
Surajit
S
Department of Physics, Indian Institute of Science, Bangalore 560012, India.
Gadagkar
Vikram
V
Maiti
Prabal K
PK
Muthu
D V S
DV
Golberg
D
D
Tang
C
C
Zhi
C
C
Bando
Y
Y
Sood
A K
AK
D001896:Boron Compounds / Q000737:chemistry*; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011312:Pressure; D013499:Surface Properties
D001896:Boron Compounds; D046911:Macromolecular Substances; C017282:boron nitride