Optimization of electromagnetic matching of Fe-filled carbon nanotubes/ferrite composites for microwave absorption

被引：37
作者：
Gui, Xuchun [1 ,2 ]
Ye, Wei [1 ,2 ]
Wei, Jinquan [1 ,2 ]
Wang, Kunlin [1 ,2 ]
Lv, Ruitao [3 ]
Zhu, Hongwei [1 ,2 ]
Kang, Feiyu [3 ]
Gu, Jialin [3 ]
Wu, Dehai [1 ,2 ]
机构：
[1] Tsinghua Univ, Key Lab Adv Mfg Mat Proc Technol, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2009年 / 42卷 / 07期
关键词：
ELECTRICAL-CONDUCTIVITY; ABSORBING PROPERTIES; NANOTUBE COMPOSITES; X-BAND; PERMITTIVITY; NANOCAPSULES;
D O I：
10.1088/0022-3727/42/7/075002
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Composite microwave absorbers have been fabricated by Fe-filled carbon nanotubes (CNTs) and a W-type hexagonal ferrite. The microwave absorption of the absorbers can be tuned by matching the dielectric loss and the magnetic loss by changing the ratio of ferrite in the composites. The microwave absorbing properties of the absorber are evidently improved as compared with the absorber containing only CNTs or ferrite. The reflection loss of the composites with 40 wt% ferrite and 6.2 vol% CNTs at 2.0mm thickness reached 21.9 dB at 8.5 GHz. The maximum absorption capability of 50.5 dB GHz was obtained at a ferrite concentration of 60 wt%. With the increase in the weight percentage of ferrite in the composites the resonance absorption peak shifted towards the lower frequency region.
引用
收藏
页数：5
相关论文
共 19 条
[1]   Fabrication and microwave absorption of carbon nanotubes/CoFe2O4 spinel nanocomposite -: art. no. 033105 [J].
Che, RC ;
Zhi, CY ;
Liang, CY ;
Zhou, XG .
APPLIED PHYSICS LETTERS, 2006, 88 (03) :1-3
[2]   Electromagnetic and microwave absorbing properties of multi-walled carbon nanotubes/polymer composites [J].
Fan, Zhuangjun ;
Luo, Guohua ;
Zhang, Zengfu ;
Zhou, Li ;
Wei, Fei .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2006, 132 (1-2) :85-89
[3]   Effect of purification of the electrical conductivity and complex permittivity of multiwall carbon nanotubes [J].
Grimes, CA ;
Dickey, EC ;
Mungle, C ;
Ong, KG ;
Qian, D .
JOURNAL OF APPLIED PHYSICS, 2001, 90 (08) :4134-4137
[4]  
GUI XC, J NANOSCI N IN PRESS, P64509
[5]   Doping effect of multiwall carbon nanotubes on the microwave electromagnetic properties of NiCoZn spinel ferrites [J].
Han, Mangui ;
Deng, Longjiang .
APPLIED PHYSICS LETTERS, 2007, 90 (01)
[6]   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
[7]   COMPLEX PERMEABILITY AND PERMITTIVITY AND MICROWAVE-ABSORPTION OF FERRITE-RUBBER COMPOSITE IN X-BAND FREQUENCIES [J].
KIM, SS ;
JO, SB ;
GUEON, KI ;
CHOI, KK ;
KIM, JM ;
CHURN, KS .
IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (06) :5462-5464
[8]   Enhanced microwave absorption in nickel/hexagonal-ferrite/polymer composites [J].
Li, Bao-Wen ;
Shen, Yang ;
Yue, Zhen-Xing ;
Nan, Ce-Wen .
APPLIED PHYSICS LETTERS, 2006, 89 (13)
[9]   Electromagnetic interference (EMI) shielding of single-walled carbon nanotube epoxy composites [J].
Li, Ning ;
Huang, Yi ;
Du, Feng ;
He, Xiaobo ;
Lin, Xiao ;
Gao, Hongjun ;
Ma, Yanfeng ;
Li, Feifei ;
Chen, Yongsheng ;
Eklund, Peter C. .
NANO LETTERS, 2006, 6 (06) :1141-1145
[10]   Investigation of the microwave-absorbing properties of Fe-filled carbon nanotubes [J].
Lin, Haiyan ;
Zhu, Hong ;
Guo, Hongfan ;
Yu, Liufang .
MATERIALS LETTERS, 2007, 61 (16) :3547-3550
12