Growth dynamics of inner tubes inside cobaltocene-filled single-walled carbon nanotubes

Author(s)
M. V. Kharlamova, Christian Kramberger, Takeshi Saito, Hidetsugu Shiozawa, Thomas Pichler
Abstract

We have synthesized cobaltocene-filled 1.7-nm-mean diameter single-walled carbon nanotubes (SWCNTs) and transformed them into double-walled carbon nanotubes by annealing at temperatures between 500 and 1000 °C for 2 h in vacuum. We analyze the temperature-dependent inner tube growth inside the filled SWCNTs by Raman spectroscopy. The changes in intensity of the Raman peaks of inner tubes with the diameters ranging from 0.832 to 1.321 nm with increasing annealing temperature are traced. It is revealed that the growth temperatures of larger diameter inner tubes are higher than the ones of smaller diameter tubes. A decrease in the diameter of the inner tubes by ~0.4 nm leads to a decrease in the growth temperature by ~200 °C.

Organisation(s)
Physics of Nanostructured Materials, Electronic Properties of Materials
Journal
Applied Physics A: materials science & processing
Volume
122
No. of pages
8
ISSN
0947-8396
DOI
https://doi.org/10.1007/s00339-016-0282-6
Publication date
08-2016
Publication status
Published
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics
ASJC Scopus subject areas
Materials Science(all), Chemistry(all)
Portal url
https://ucris.univie.ac.at/portal/en/publications/growth-dynamics-of-inner-tubes-inside-cobaltocenefilled-singlewalled-carbon-nanotubes(2c3c748e-8d6c-42a1-bb7f-7257828a2381).html