Synthesis and characterization of magnetic Fe/CNTs composites with controllable Fe nanoparticle concentration |
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Authors: | Fan Zhao Hongyan DuanWeigao Wang Jun Wang |
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Institution: | Department of Physics, Ningbo University, Ningbo, Zhejiang 315211, China |
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Abstract: | Fe/CNTs composites, with different concentrations of Fe nanoparticles (NPs) on carbon nanotube (CNT) surfaces, were successfully fabricated via a facile solvothermal method. The lengths of CNTs are up to 10 μm and the mean diameter of the Fe nanoparticles is about 25 nm. The structures, composition and magnetic properties of the Fe/CNTs were characterized by XRD, FTIR, FE-SEM, TEM and PPMS. We found that the concentrations of Fe nanoparticles depositing on the CNTs could be controlled by adjusting the initial mass ratio of ferrocene to CNTs. The Fe/CNTs composites display good ferromagnetic properties at room temperature, with a saturation magnetization of 125 emu/g-Fe and a coercivity of 276 Oe. The Curie temperature of the sample is about 1038 K, slightly lower than that (1043 K) of the bulk iron. |
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Keywords: | Multi-walled CNTs Magnetic properties Composites Fe |
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