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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 1: 23 - 28

DOI: https://doi.org/10.3724/SP.J.1077.2008.00023

Research Paper

Electromagnetic Property of α-Fe Filled Carbon Nanotubes

  • LU Rui-Tao
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  • 1. Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; 2. Department of Mechanical Engineering and Key Laboratory for Advanced Manufacturing by Materials Processing Technology of Ministry of Education, Tsinghua University, Beijing 100084, China

Received date: 2006-12-29

  Revised date: 2007-03-16

  Online published: 2008-01-20

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Abstract

Carbon nanotubes filled with α-Fe nanowires (FCNT) was prepared conveniently by the
pyrolysis of ferrocene. The lengths of iron nanowires were in the range of 30--500nm.
Carbon nanotubes can protect inner iron nanowires from oxidation. After filling FCNT into paraffin wax to form a composite, both the permittivity and permeability in 2-- 18GHz of as-prepared composite samples were measured. Compared with pure carbon
nanotubes (MCNT), the real part, imaginary part of permittivity and the real part of permeability are improved remarkably. However, the imaginary part of permeability is lower than that of MCNT. There are two peaks of reflection loss for FCNT/epoxy coating at 3.5GHz and 5.0GHz, whose reflection loss values are --3.9dB and --4.0dB,
respectively. The results show that this novel absorber is promising to absorb microwave in 2--4GHz frequency effectively.

Key words： carbon nanotubes; filling; magnetic metal; microwave absorber

Cite this article

LU Rui-Tao . Electromagnetic Property of α-Fe Filled Carbon Nanotubes[J]. Journal of Inorganic Materials, 2008 , 23(1) : 23 -28 . DOI: 10.3724/SP.J.1077.2008.00023

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