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Chinese Physics Letters Volume 26 Number 11 Create an alert RSS this journal

Xu Mei-Hua et al 2009 Chinese Phys. Lett. 26 116103 doi:10.1088/0256-307X/26/11/116103

Synthesis and Properties of Magnetic Composites of Carbon Nanotubes/Fe Nanoparticle

Xu Mei-Hua1,2, Qi Xiao-Si1, Zhong Wei1, Ye Xiao-Juan1, Deng Yu1, Au Chaktong3, Jin Chang-Qing1, Yang Zai-Xing1 and Du You-Wei1

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Abstract References Cited By

CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES

Magnetic composites of carbon nanotubes (CNTs) are synthesized by the in situ catalytic decomposition of benzene at temperatures as low as 400°C over Fe nanoparticles (mean grain size = 26 nm) produced by sol-gel fabrication and hydrogen reduction. The yield of CNT composite is up to about 3025% in a run of 6 h. FESEM and HRTEM investigations reveal that one-dimensional carbon species are produced in a large quantity. A relatively high value of magnetization is observed for the composite due to the encapsulation of ferromagnetic Fe3C and/or α-Fe. The method is suitable for the mass-production of CNT composites that contain magnetic nanoparticles.


PACS

75.75.+a Magnetic properties of nanostructures

75.50.Tt Fine-particle systems; nanocrystalline materials

68.37.Hk Scanning electron microscopy (SEM) (including EBIC)

75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects

81.16.Hc Catalytic methods

81.20.Fw Sol-gel processing, precipitation

Subjects

Condensed matter: electrical, magnetic and optical

Surfaces, interfaces and thin films

Condensed matter: structural, mechanical & thermal

Nanoscale science and low-D systems

Dates

Issue 11 (November 2009)

Received 5 May 2009



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