Ion irradiation of carbon nanotubes encapsulating cobalt crystals

Ossi Lehtinen; L Sun; Timur Nikitin; Arkady Krasheninnikov; Leonid Khriachtchev; J. A Rodriguez-Manzo; M Terrones; F Banhart; Juhani Keinonen

doi:10.1016/j.physe.2007.07.011

Ion irradiation of carbon nanotubes encapsulating cobalt crystals

Ossi Lehtinen, L Sun, Timur Nikitin, Arkady Krasheninnikov, Leonid Khriachtchev, J. A Rodriguez-Manzo, M Terrones, F Banhart, Juhani Keinonen

Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review

Sammanfattning

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. (C) 2007 Elsevier B.V. All rights reserved.

Originalspråk	engelska
Tidskrift	Physica E: Low-Dimensional Systems and Nanostructures
Volym	40
Sidor (från-till)	2618-2621
Antal sidor	4
ISSN	1386-9477
DOI	https://doi.org/10.1016/j.physe.2007.07.011
Status	Publicerad - 2008
MoE-publikationstyp	A1 Tidskriftsartikel-refererad

Vetenskapsgrenar

114 Fysik

Åtkomst av dokument

10.1016/j.physe.2007.07.011

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title = "Ion irradiation of carbon nanotubes encapsulating cobalt crystals",

abstract = "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. (C) 2007 Elsevier B.V. All rights reserved.",

keywords = "114 Physical sciences",

author = "Ossi Lehtinen and L Sun and Timur Nikitin and Arkady Krasheninnikov and Leonid Khriachtchev and Rodriguez-Manzo, {J. A} and M Terrones and F Banhart and Juhani Keinonen",

year = "2008",

doi = "10.1016/j.physe.2007.07.011",

language = "English",

volume = "40",

pages = "2618--2621",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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TY - JOUR

T1 - Ion irradiation of carbon nanotubes encapsulating cobalt crystals

AU - Lehtinen, Ossi

AU - Sun, L

AU - Nikitin, Timur

AU - Krasheninnikov, Arkady

AU - Khriachtchev, Leonid

AU - Rodriguez-Manzo, J. A

AU - Terrones, M

AU - Banhart, F

AU - Keinonen, Juhani

PY - 2008

Y1 - 2008

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. (C) 2007 Elsevier B.V. All rights reserved.

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. (C) 2007 Elsevier B.V. All rights reserved.

KW - 114 Physical sciences

U2 - 10.1016/j.physe.2007.07.011

DO - 10.1016/j.physe.2007.07.011

M3 - Article

VL - 40

SP - 2618

EP - 2621

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

SN - 1386-9477

ER -