Preparation of CNTs-supported Fe3O4 and Fe3C Nano-particles and the Investigation on their Magnetic Properties

Author

Yi, Guifen ; Zhang, Xiaobin ; Fu Liu ; Cheng, Jipeng ; Yuhong Mi ; Zhang, Huai

Author_Institution

State Key Lab. of Silicon Material, Zhejiang Univ., Hangzhou

fYear

2006

fDate

18-21 Jan. 2006

Firstpage

649

Lastpage

652

Abstract

Magnetite (Fe₃O₄) nanoparticles uniformly loaded on multi-walled carbon nanotubes (MWCNTs) were synthesized by a wet chemistry method, and then carbon coated Fe₃C nanoparticles supported by MWCNTs were prepared by heat-treatments subsequently in nitrogen at 600 degC and in acetylene atmosphere at 500 degC. The as-prepared nanoparticles were all single crystals with a size distribution ranging from 10 to 60nm upon TEM and XRD measurements. The magnetic properties of these two kinds of nanoparticles were measured using vibrating sample magnetometer (VSM) at room temperature. The results show that above materials are useful for magnetic materials, and the method to produce magnetic nanoparticles coated with graphite is rather simple

Keywords

X-ray diffraction; carbon nanotubes; heat treatment; iron compounds; magnetic hysteresis; magnetometers; nanoparticles; transmission electron microscopy; 10 to 60 nm; 500 C; 600 C; C; Fe₃C; Fe₃O₄; TEM analysis; XRD analysis; heat treatment; magnetic properties; magnetite; multi-walled carbon nanotubes; nanoparticles; single crystals; vibrating sample magnetometer; wet chemistry method; Atmosphere; Atmospheric measurements; Carbon nanotubes; Chemistry; Crystals; Iron; Magnetic materials; Magnetic properties; Nanoparticles; Nitrogen; Fe3C; Fe3O4; MWCNTs; magnetic;

fLanguage

English

Publisher

ieee

Conference_Titel

Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on

Conference_Location

Zhuhai

Print_ISBN

1-4244-0139-9

Electronic_ISBN

1-4244-0140-2

Type

conf

DOI

10.1109/NEMS.2006.334865

Filename

4135038