Microwave absorption properties of double-layer absorbers made of NiCoZn ferrites and hollow glass microspheres electroless plated with FeCoNiB

被引：42
作者：
Han, Mangui [1 ]
Ou, Yu [1 ]
Deng, Longjiang [1 ]
机构：
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Chemical electroless deposition; Spinel ferrite; Microwave absorber; Permeability dispersion; ELECTROMAGNETIC-WAVE ABSORBER;
D O I：
10.1016/j.jmmm.2008.10.043
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Amorphous FeCoNiB coatings were deposited by an electroless plating technique on the hollow glass microspheres. NiCoZn spinel ferrites sintered show two dispersion peaks (1.81 and 6.98 GHz). By fitting its permeability dispersion spectra, the one at low frequency is believed to be due to the domain wall movement mechanism, the other one is due to the spin rotation mechanism. Used in a single-layer absorber structure, neither the hollow glass microspheres coated nor the NiCoZn could meet the demand of light weight. However, if a double-layer absorber structure is used, not only the total weight of an absorber is reduced, but also the microwave absorption performance is enhanced. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1125 / 1129
页数：5
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