Xu Mei-Hua et al 2009 Chinese Phys. Lett. 26 116103 doi:10.1088/0256-307X/26/11/116103
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
Show affiliationsMagnetic 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.
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
Condensed matter: electrical, magnetic and optical
Surfaces, interfaces and thin films
Issue 11 (November 2009)
Received 5 May 2009
Xu Mei-Hua et al 2009 Chinese Phys. Lett. 26 116103
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