# Studies on high pressure behavior of carbon nanotubes: X-ray diffraction measurements using synchrotron radiation

Karmakar, S and Sharma, Surinder M and Sood, AK (2005) Studies on high pressure behavior of carbon nanotubes: X-ray diffraction measurements using synchrotron radiation. In: Nuclear Instruments & Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 238 (1&4). pp. 281-284.

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## Abstract

High-pressure behavior of novel one-dimensional material - carbon nanotubes (single-walled and multi-walled, pristine and Fe-filled) have been investigated by in situ powder X-ray diffraction (XRD) studies.Single-walled nanotubes show remarkable mechanical resilience. The presence of non-hydrostatic stresses makes compression behavior much different from that under the hydrostatic stress. Our results also suggest pressure-induced elliptization of the tubes in a bundle.Iron-filled multi-walled nanotubes, unlike pristine, show a structural modification at a pressure of similar to 9 GPa where the outer component $(Fe_{3}C)$ of the encapsulated nanowire undergoes aniso-structural transition. Also the high-pressure behavior of the \alpha-Fe is quite different from the bulk.

Item Type: Journal Article Copyright for this article belongs to Elsevier. Carbon nanotubes;High pressure;X-ray diffraction Division of Physical & Mathematical Sciences > Physics 29 Nov 2005 19 Sep 2010 04:21 http://eprints.iisc.ernet.in/id/eprint/4218