Broadband and thin microwave absorber of nickel-zinc ferrite/carbonyl iron composite

被引：38

作者：

Yan, Longgang ^{[1
]}

Wang, Jianbo ^{[1
]}

Ye, Yunzhe ^{[1
]}

Hao, Zhi ^{[1
]}

Liu, Qingfang ^{[1
]}

Li, Fashen ^{[1
]}

机构：

[1] Lanzhou Univ, Inst Appl Magnet, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 487卷 / 1-2期

关键词：

Composite materials; Mechanical alloying; Scanning electron microscopy; Magnetic measurements; ZR ALLOY FLAKES; ELECTROMAGNETIC CHARACTERISTICS; MICROSTRUCTURE; PERMEABILITY; NANOCAPSULES;

D O I：

10.1016/j.jallcom.2009.08.051

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ni0.5Zn0.5Fe2O4/carbonyl iron composites for broadband and thin microwave absorbers were prepared from the starting materials of Ni0.5Zn0.5Fe2O4 and raw commercial carbonyl iron by a simple ball-milling technique. Flake-shaped particles are obtained after 2 h ball-milling, and the sample shows the highest permeability among all samples. Permeability and permittivity decrease gradually with increasing ball-milling time. Good microwave absorption properties can be obtained in the samples with ball-milling time 6 and 8 h. Their reflection loss values less than -20 dB in the ranges of 5.4-14.8 and 5.0-13.3 GHz over absorber thicknesses of 1.6-3.3 and 1.7-3.6 mm, respectively. The results can be qualitatively explained by a proper electromagnetic impedance match that is mainly due to the decrease of permittivity with increasing ball-milling time. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：708 / 711

页数：4

共 29 条

[1] Microstructure and electromagnetic characteristics of Ni nanoparticle film coated carbon microcoils [J].

Bi, Hui ;

Kou, Kai-Chang ;

Ostrikov, Kostya ;

Yan, Lu-Ke ;

Wang, Zhi-Chao .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 478 (1-2) :796-800

[2] Annealing effect on the magnetic properties of Fe-Co-Zr alloy flakes [J].

Gong, Rongzhou ;

Wang, Xian ;

Cheng, Weiming ;

Shen, Xiang .

MATERIALS LETTERS, 2008, 62 (02) :266-268

[3] Preparation of CoFe alloy nanoparticles with tunable electromagnetic wave absorption performance [J].

Gong, Y. X. ;

Zhen, L. ;

Jiang, J. T. ;

Xu, C. Y. ;

Shao, W. Z. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2009, 321 (22) :3702-3705

[4]

HAN Z, 2009, J PHYS D, V42, P5

[5] Novel rare earth recovery process on Nd-Fe-B magnet scrap by selective chlorination using NH4Cl [J].

Itoh, Masahiro ;

Miura, Koji ;

Machida, Ken-ichi .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 477 (1-2) :484-487

[6] Synthesis and electromagnetic characteristics of the flake-shaped barium titanate powder [J].

Jing, Lian ;

Wang, Guiqin ;

Duan, Yuping ;

Jiang, Yuzong .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 475 (1-2) :862-868

[7] Magnetic and electromagnetic wave absorption properties of α-Fe/Z-type Ba-ferrite nanocomposites [J].

Liu, JR ;

Itoh, M ;

Machida, K .

APPLIED PHYSICS LETTERS, 2006, 88 (06)

[8] Enhanced natural resonance and attenuation properties in superparamagnetic graphite-coated FeNi3 nanocapsules [J].

Liu, X. G. ;

Ou, Z. Q. ;

Geng, D. Y. ;

Han, Z. ;

Xie, Z. G. ;

Zhang, Z. D. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2009, 42 (15)

[9] (Fe, Ni)/C nanocapsules for electromagnetic-wave-absorber in the whole Ku-band [J].

Liu, X. G. ;

Li, B. ;

Geng, D. Y. ;

Cui, W. B. ;

Yang, F. ;

Xie, Z. G. ;

Kang, D. J. ;

Zhang, Z. D. .

CARBON, 2009, 47 (02) :470-474

[10] Microwave absorption properties of FCC-Co/Al2O3 and FCC-Co/Y2O3 nanocapsules [J].

Liu, X. G. ;

Geng, D. Y. ;

Meng, H. ;

Cui, W. B. ;

Yang, F. ;

Kang, D. J. ;

Zhang, Z. D. .

SOLID STATE COMMUNICATIONS, 2009, 149 (1-2) :64-67

← 1 2 3 →