TY - JOUR
T1 - Ion irradiation of carbon nanotubes encapsulating cobalt crystals
AU - Lehtinen, O.
AU - Sun, L.
AU - Nikitin, T.
AU - Krasheninnikov, A. V.
AU - Khriachtchev, L.
AU - Rodríguez-Manzo, J. A.
AU - Terrones, M.
AU - Banhart, F.
AU - Keinonen, J.
N1 - Funding Information:
The research was supported by the Academy of Finland under its Centres of Excellence Program (Computational Molecular Science) and projects NANOTOMO (118055) and MEPNAS (111469) and the FinnNano program.
PY - 2008/5
Y1 - 2008/5
N2 - The response of multi-walled carbon nanotubes encapsulating Co nanorods to ion irradiation was studied. The irradiation experiments with medium ion energies (40-500 keV) were carried out at high temperatures and combined with transmission electron microscopy and Raman characterization of the irradiated samples. Contrary to electron irradiation and high-energy (100 MeV) ion irradiation, we did not see accumulation of pressure inside irradiated nanotubes. We found that nanotubes with Co nanorods inside were transformed to amorphous carbon rods encapsulating Co clusters with typical diameters of 3-6 nm. As Co is magnetic, such one-dimensional composite systems could be used for various applications such as magnetic data storage or magnetic resonance imaging.
AB - The response of multi-walled carbon nanotubes encapsulating Co nanorods to ion irradiation was studied. The irradiation experiments with medium ion energies (40-500 keV) were carried out at high temperatures and combined with transmission electron microscopy and Raman characterization of the irradiated samples. Contrary to electron irradiation and high-energy (100 MeV) ion irradiation, we did not see accumulation of pressure inside irradiated nanotubes. We found that nanotubes with Co nanorods inside were transformed to amorphous carbon rods encapsulating Co clusters with typical diameters of 3-6 nm. As Co is magnetic, such one-dimensional composite systems could be used for various applications such as magnetic data storage or magnetic resonance imaging.
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U2 - 10.1016/j.physe.2007.07.011
DO - 10.1016/j.physe.2007.07.011
M3 - Article
AN - SCOPUS:44049099286
SN - 1386-9477
VL - 40
SP - 2618
EP - 2621
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
IS - 7
ER -