Multi-Walled Carbon Nanotubes Synthesized by Methane Pyrolysis: Structure and Magnetic Properties

Nikita S. Saenko; Albert M. Ziatdinov

doi:10.4028/www.scientific.net/SSP.213.60

Paper Titles

Phase Transformation in Titanium Nanoparticles from First Principles
p.42

Adsorption Configuration of CH₄ on Fe/SiO₂ Surface: First-Principles Calculations
p.47

The Influence of Seed Layer on Growth of Magnetite Films on the SiO₂/Si (001) Surface
p.51

Electrical Transport Features in Fe₃O₄/SiO₂/n-Si Hybrid Structures
p.56

Multi-Walled Carbon Nanotubes Synthesized by Methane Pyrolysis: Structure and Magnetic Properties
p.60

Sodium Doping of Bi/Si(111) Ultra-Thin Films
p.65

Structure and Optical Properties of Ca Silicide Films and Si/Ca₃Si₄/Si(111) Heterostructures
p.71

Fabrication of Nano-Sized Silicon Powder by Adiabatic Compression
p.80

Ab Initio Calculation of Cobalt Interlayer Size Influence on Tensile Strength in WC-Co Hard Alloy
p.86

HomeSolid State PhenomenaSolid State Phenomena Vol. 213Multi-Walled Carbon Nanotubes Synthesized by...

Multi-Walled Carbon Nanotubes Synthesized by Methane Pyrolysis: Structure and Magnetic Properties

Abstract:

The structure and magnetic properties of multi-walled carbon nanotubes produced by catalytic pyrolysis of methane have been investigated by means of mutually complementary physical methods. The average sizes and number of carbon layers forming nanotubes, smearing of the density of states near the Fermi level, degeneracy temperature of gas of extrinsic current carriers, concentrations of localized spins and extrinsic two-dimensional current carriers have been determined. The conclusion has been drawn that ferromagnetic nanoparticles are present in the inner regions of nanotubes, including their tubular cavities. The difference in electronic structure near the Fermi level for carbon nanotubes and ordered graphite has been revealed. The possible reason is that the electronic states near zigzag-type sites of ends as well as edges of linear structural defects in nanotubes make greater contribution to the spectrum than that from similar sites of graphite.

You might also be interested in these eBooks

Physics and Technology of Nanostructured Materials II

View Preview

Info:

Periodical:

Solid State Phenomena (Volume 213)

Pages:

60-64

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.213.60

Citation:

Cite this paper

Online since:

March 2014

Authors:

Nikita S. Saenko*, Albert M. Ziatdinov

Keywords:

Carbon Nanotube (CN), Electron Microscopy, Electronic Structure, EMR, Magnetic Property, Magnetic Susceptibility, X-Ray Photoelectron Spectroscopy

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] S. Amelinckx, D. Bernaerts, X.B. Zhang, G. Van Tendeloo, J. Van Landuyt, A structure model and growth mechanism for multishell carbon nanotubes, Science 267 (1995) 1334-1338.

DOI: 10.1126/science.267.5202.1334

Google Scholar

[2] C. -H. Kiang, M. Endo, P.M. Ajayan, G. Dresselhaus, M.S. Dresselhaus, Size effects in carbon nanotubes, Phys. Rev. Lett. 81 (1998) 1869-1872.

DOI: 10.1103/physrevlett.81.1869

Google Scholar

[3] E.G. Rakov, Methods for preparation of carbon nanotubes, Russ. Chem. Rev. 69 (2000) 35-52.

Google Scholar

[4] S.L. Flegler, J.W. Heckman, K.L. Klomparens, Scanning and transmission election microscopy: an introduction, Oxford University Press, USA, (1993).

Google Scholar

[5] F.H. Ko, C.Y. Lee, C.J. Ko, T.C. Chu, Purification of multi-walled carbon nanotubes through microwave heating of nitric acid in a closed vessel, Carbon 43 (2005) 727-733.

DOI: 10.1016/j.carbon.2004.10.042

Google Scholar

[6] T. Holstein, H. Primakoff, Field dependence of the intrinsic domain magnetization of a ferromagnet, Phys. Rev. 58 (1940) 1098–1113.

DOI: 10.1103/physrev.58.1098

Google Scholar

[7] A.S. Kotosonov, S.V. Kuvshinnikov, Diamagnetism of some quasi-two-dimensional graphites and multiwall carbon nanotubes, Phys. Lett. A 230 (1997) 377-380.

DOI: 10.1016/s0375-9601(97)00229-6

Google Scholar

[8] A.S. Kotosonov, Texture and magnetic anisotropy of carbon nanotubes in cathode deposits obtained by the electric-arc method, JETP Letters 70 (1999) 476-480.

DOI: 10.1134/1.568199

Google Scholar

[9] S. Suzuki, Y. Watanabe, T. Ogino, S. Heun, L. Gregoratti, A. Barinov, B. Kaulich, M. Kiskinova, W. Zhu, C. Bower, and O. Zhou, Electronic structure of carbon nanotubes studied by photoelectron spectromicroscopy, Phys. Rev. B 66 (2002) 035414.

DOI: 10.1103/physrevb.66.035414

Google Scholar

[10] M. Fujita, K. Wakabayashi, K. Nakada, K. Kusakabe, Peculiar localized state at zigzag graphite edge, J. Phys. Soc. Jpn. 65 (1996) 1920-(1923).

DOI: 10.1143/jpsj.65.1920

Google Scholar