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Macroscopic determination of effective growth condition and distribution of Fe particles in the vapor phase growth of multiwalled carbon nanotubes
- Authors
- Jang, Jae Won; Lee, Kyu Won; Lee, E. M.; Lee, Cheol Eui
- Issue Date
- 2월-2008
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- multiwalled carbon nanotubes; vapor phase growth; distribution of catalyst particles; magnetic properties
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.52, pp.S75 - S79
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 52
- Start Page
- S75
- End Page
- S79
- ISSN
- 0374-4884
- Abstract
- We were able to distinctively characterize the Fe catalyst particle distribution in multiwalled carbon nanotubes (MWNTs) synthesized by vapor-phase growth at 950 degrees C by means of macroscopic SQUID measurements and Raman analysis. The magnetic properties of Fe particles included the MWNTs are shown to depend on the formation of MWNTs. The size and number of Fe particles included in MWNTs are discussed in terms of the change of average magnetic moment, the coercive field, and remanent magnetization of Fe particles with changing Fe concentration.
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