Electromagnetic wave absorption properties of Fe3C/carbon nanocomposites prepared by a CVD method

Abstract Dendrite-shaped iron nanowires with 50–200 nm in diameter and 10–20 μm in length were prepared by the CVD method from Fe(CO) 5 as a starting source. Ethanol was cracked on the surface of the resultant iron nanowires to form the Fe 3 C/carbon nanocomposites, in which nanosized carbon beads covered the surface of Fe 3 C. Resin compact of the resultant Fe 3 C/carbon nanocomposites had excellent electromagnetic wave absorption ability in the range of 0.9–9.0 GHz, and such available absorption range more enhanced compared to that observed on the resin compact prepared from the original iron nanowires by the hybridization of magnetic (Fe 3 C) and dielectric (carbon) materials.

[1]  H. R. Khan,et al.  Synthesis and properties of the arrays of magnetic nanowires of Co and CoFe , 2002 .

[2]  Hiroyasu Ota,et al.  GHz microwave absorption of a fine α-Fe structure produced by the disproportionation of Sm2Fe17 in hydrogen , 2002 .

[3]  Youwei Du,et al.  Preparation and magnetic property of Fe nanowire array , 2000 .

[4]  M. Vázquez,et al.  Transverse magnetic anisotropy of magnetoelastic origin induced in Co nanowires , 2006 .

[5]  S. Chikazumi.  Physics of ferromagnetism , 1997 .

[6]  Sahrim Ahmad,et al.  Electromagnetic and absorption properties of some microwave absorbers , 2002 .

[7]  K. Churn,et al.  Complex permeability and permittivity and microwave absorption of ferrite-rubber composite at X-band frequencies , 1991 .

[8]  Dusan A. Pejakovic,et al.  Electrical conductivity and electromagnetic interference shielding of multiwalled carbon nanotube composites containing Fe catalyst , 2004 .

[9]  F. Wei,et al.  Electromagnetic and microwave absorbing properties of multi-walled carbon nanotubes/polymer composites , 2006 .

[10]  Yonghao Fang,et al.  Fabrication and magnetic property of monocrystalline cobalt nanowire array by direct current electrodeposition , 2005 .

[11]  Dingsheng Yuan,et al.  Preparation of Carbon Micro-beads via an Ethanol-thermal Route , 2005 .

[12]  Masao Terada,et al.  Enhanced electromagnetic wave absorption properties of Fe nanowires in gigaherz range , 2007 .

[13]  J. George,et al.  Electrochemical deposition of Co nanowire arrays; quantitative consideration of concentration profiles , 2001 .

[14]  Qing Chen,et al.  Microwave Absorption Enhancement and Complex Permittivity and Permeability of Fe Encapsulated within Carbon Nanotubes , 2004 .

[15]  Hirotaro Mori,et al.  Iron based carbon nanocomposites for electromagnetic wave absorber with wide bandwidth in GHz range , 2006 .

[16]  C. Li,et al.  Fabrication of electrodeposited Co nanowire arrays with perpendicular anisotropy , 2001 .