Structure and magnetic properties of FeCo nanoparticles encapsulated in carbon nanotubes grown by microwave plasma enhanced chemical vapor deposition

Plasma enhanced chemical vapor deposition is a simple technique for preparing magnetic nanoparticles encapsulated in carbon nanotubes. We employed alloy catalysts when growing carbon nanotubes to control the composition and magnetic properties of encapsulated nanoparticles. Single-crystal nanopartic...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2011-12, Vol.323 (24), p.3184-3188
Main Authors: Hisada, Daijiro, Fujiwara, Yuji, Sato, Hideki, Jimbo, Mutsuko, Kobayashi, Tadashi, Hata, Koichi
Format: Article
Language:English
Subjects:
Carbon nanotube
Carbon nanotubes
Catalysis
Catalysts
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Crystal structure
CVD
Encapsulation
Exact sciences and technology
Magnetic nanoparticle
Magnetic properties
Magnetic properties and materials
Magnetic properties of nanostructures
Nanoparticles
Physics
Plasma enhanced chemical vapor deposition
Single crystal
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Summary:Plasma enhanced chemical vapor deposition is a simple technique for preparing magnetic nanoparticles encapsulated in carbon nanotubes. We employed alloy catalysts when growing carbon nanotubes to control the composition and magnetic properties of encapsulated nanoparticles. Single-crystal nanoparticles were successfully encapsulated in carbon nanotubes, and their crystal structure varied depending on the composition of the alloy catalysts. The coercive force of nanoparticles also varied according to the composition of the catalysts. ▸ Single-crystal FeCo alloy nanoparticles were successfully encapsulate in carbon nanotubes by microwave plasma. ▸ The crystal structure of nanoparticles changed according to the composition of FeCo catalysts. ▸ Coercive force in nanoparticles better with rising the Co content in FeCo catalyst and shows a maximum at Co content of 50at%.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2011.06.029