Abstract
AbstractMulti‐walled boron nitride nanotubes were irradiated with low and medium energy argon and helium ions at room and elevated temperatures. The irradiated samples were characterized by transmission electron microscopy and Raman spectroscopy, and a comparison to the response of carbon nanotubes to irradiation was made. A dose of 2 × 1015 ions/cm2 was found to give rise to complete amorphization for irradiation with 40 keV Ar ions,while a comparable dose (in terms of displacement per atom) of 1.2 × 1018 ions/cm2 for 350 keV He caused significantly less damage. Elevated temperatures considerably reduce the amount of damage indicating that efficient annealing of defects occurs in BN nanotubes already at 3000 C. Our results provide evidence that multi‐walled BN nanotubes have similar or even better stability under ion irradiation than their carbon counterparts. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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