Microwave absorbing properties and magnetic properties of different carbon nanotubes

被引：28
作者：
Gui XuChun [1 ]
Wang KunLin [1 ]
Wei JinQuan [1 ]
Lue RuiTao [2 ]
Shu QinKe [1 ]
Jia Yi [1 ]
Wang Chen [2 ]
Zhu HongWei [1 ]
Wu DeHai [1 ]
机构：
[1] Tsinghua Univ, Dept Mech Engn, Key Lab Adv Mfg Mat Proc Technol, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 2009年 / 52卷 / 01期
关键词：
carbon nanotubes; microwave absorbing properties; magnetic properties; COMPLEX PERMITTIVITY; X-BAND; ABSORPTION; PERMEABILITY; COMPOSITES; ARRAYS;
D O I：
10.1007/s11431-009-0020-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microwave absorbing properties and magnetic properties of as-grown Fe-filled carbon nanotubes (CNTs), annealed Fe-filled CNTs, and multi-walled CNTs were studied. Vibrating sample magnetometer results showed that the annealed Fe-filled CNTs have the weakest coercivity and strongest saturation magnetization among the three types CNTs, due to the presence of more ferromagnetic alpha-Fe nanowires. After annealing, the values increased to 291.0 Oe and 28.0 emu/g and the samples showed excellent microwave absorbing properties. The reflection loss was over 5 dB between 11.6 GHz and 18 GHz with a maximum value of 10.8 dB for annealed Fe-filled CNTs (1.1 wt%)/epoxy composite.
引用
收藏
页码：227 / 231
页数：5
相关论文
共 15 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]   The 500 MHz to 5.50 GHz complex permittivity spectra of single-wall carbon nanotube-loaded polymer composites [J].
Grimes, CA ;
Mungle, C ;
Kouzoudis, D ;
Fang, S ;
Eklund, PC .
CHEMICAL PHYSICS LETTERS, 2000, 319 (5-6) :460-464
[3]   Improved filling rate and enhanced magnetic properties of Fe-filled carbon nanotubes by annealing and magnetic separation [J].
Gui, Xuchun ;
Wei, Jinquan ;
Wang, Kunlin ;
Wang, Wenxiang ;
Lv, Ruitao ;
Chang, Jianguo ;
Kang, Feiyu ;
Gu, Jialin ;
Wu, Dehai .
MATERIALS RESEARCH BULLETIN, 2008, 43 (12) :3441-3446
[4]   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
[5]   Nanotube molecular wires as chemical sensors [J].
Kong, J ;
Franklin, NR ;
Zhou, CW ;
Chapline, MG ;
Peng, S ;
Cho, KJ ;
Dai, HJ .
SCIENCE, 2000, 287 (5453) :622-625
[6]   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
[7]   Nanoparticle-assisted microwave absorption by single-wall carbon nanotubes [J].
Wadhawan, A ;
Garrett, D ;
Perez, JM .
APPLIED PHYSICS LETTERS, 2003, 83 (13) :2683-2685
[8]   Synthesis of Fe-filled thin-walled carbon nanotubes with high filling ratio by using dichlorobenzene as precursor [J].
Wang, Wenxiang ;
Wang, Kunlin ;
Lv, Ruitao ;
Wei, Jinquan ;
Zhang, Xianfeng ;
Kang, Feiyu ;
Chang, Jianguo ;
Shu, Qinke ;
Wang, Yuquan ;
Wu, Dehai .
CARBON, 2007, 45 (05) :1127-1129
[9]   The complex permittivity of multi-walled carbon nanotube-polystyrene composite films in X-band [J].
Watts, PCP ;
Ponnampalam, DR ;
Hsu, WK ;
Barnes, A ;
Chambers, B .
CHEMICAL PHYSICS LETTERS, 2003, 378 (5-6) :609-614
[10]   High permittivity from defective multiwalled carbon nanotubes in the X-band [J].
Watts, PCP ;
Hsu, WK ;
Barnes, A ;
Chambers, B .
ADVANCED MATERIALS, 2003, 15 (7-8) :600-603
12