Electromagnetic wave absorption properties of porous carbon/Co nanocomposites

被引：367

作者：

Liu, Qinglei ^{[1
]}

Zhang, Di ^{[1
]}

Fan, Tongxiang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200030, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2957035

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Porous carbon/Co nanocomposites were fabricated by a sol-gel method. The electromagnetic parameters were measured in the 2-18 GHz range. Compared with porous carbon composite, porous carbon/Co nanocomposite has larger dielectric loss due to the enhanced interfacial polarization relaxation loss and Ohmic loss. The maximum reflection loss of the porous C(Co) nanocomposite can reach 40 dB at 4.2 GHz with 5 mm in thickness and the primary microwave absorptive mechanism is ascribed to the dielectric loss. The effect of porous structure on microwave absorption property of the carbon/Co nanocomposite was also discussed. (C) 2008 American Institute of Physics.

引用

页数：3

共 17 条

[1] Microwave absorption enhancement and complex permittivity and permeability of Fe encapsulated within carbon nanotubes [J].

Che, RC ;

Peng, LM ;

Duan, XF ;

Chen, Q ;

Liang, XL .

ADVANCED MATERIALS, 2004, 16 (05) :401-+

[2] Microwave absorbing performances of multiwalled carbon nanotube composites with negative permeability [J].

Deng, Longjiang ;

Han, Mangui .

APPLIED PHYSICS LETTERS, 2007, 91 (02)

[3] Electromagnetic wave propagation in dense carbon nanotube arrays [J].

Dragoman, D ;

Dragoman, M .

JOURNAL OF APPLIED PHYSICS, 2006, 99 (07)

[4] The electromagnetic characteristics, of carbon foams [J].

Fang, Zhigang ;

Li, Chusen ;

Sun, Hayan ;

Zhang, Hongtao ;

Zhang, Jinsong .

CARBON, 2007, 45 (15) :2873-2879

[5] Electrical conductivity and electromagnetic interference shielding of multiwalled carbon nanotube composites containing Fe catalyst [J].

Kim, HM ;

Kim, K ;

Lee, CY ;

Joo, J ;

Cho, SJ ;

Yoon, HS ;

Pejakovic, DA ;

Yoo, JW ;

Epstein, AJ .

APPLIED PHYSICS LETTERS, 2004, 84 (04) :589-591

[6] Maxwell Garnett theory for mixtures of anisotropic inclusions: Application to conducting polymers [J].

Levy, O ;

Stroud, D .

PHYSICAL REVIEW B, 1997, 56 (13) :8035-8046

[7] Gigahertz range electromagnetic wave absorbers made of amorphous-carbon-based magnetic nanocomposites [J].

Liu, JR ;

Itoh, M ;

Horikawa, T ;

Machida, K ;

Sugimoto, S ;

Maeda, T .

JOURNAL OF APPLIED PHYSICS, 2005, 98 (05)

[8] Amorphous carbon-matrix composites with interconnected carbon nano-ribbon networks for electromagnetic interference shielding [J].

Liu, Qinglei ;

Zhang, Di ;

Fan, Tonpxiang ;

Gu, Jiajun ;

Miyamoto, Yoshinari ;

Chen, Zhixin .

CARBON, 2008, 46 (03) :461-465

[9] Effect of the soft/hard exchange interaction on natural resonance frequency and electromagnetic wave absorption of the rare earth-iron-boron compounds [J].

Maeda, T ;

Sugimoto, S ;

Kagotani, T ;

Tezuka, N ;

Inomata, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 281 (2-3) :195-205

[10] MICROWAVE ABSORBING MATERIALS BASED ON CONDUCTING POLYMERS [J].

OLMEDO, L ;

HOURQUEBIE, P ;

JOUSSE, F .

ADVANCED MATERIALS, 1993, 5 (05) :373-377

← 1 2 →