Effect of Magnetic Orientation on the Microwave Absorption Properties for Planar-Anisotropy Ce2Fe17N3-δ Powders/Silicone Composite

2017 ◽  
Vol 898 ◽  
pp. 1638-1644
Author(s):  
Xi Sheng Gu ◽  
Guo Guo Tan ◽  
Shu Wen Chen ◽  
Qi Kui Man ◽  
Sheng Lei Che ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
High Performance ◽  
Initial Permeability ◽  
Impedance Match ◽  
Magnetic Orientation ◽  
Planar Anisotropy ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Microwave Absorbing Properties ◽  
Orientation Method

The electromagnetic parameters of magnetic unoriented and oriented Ce2Fe17N3-δ powders/Silicone composite with 15 vol% were investigated in the 0.1–18 GHz range. It was found that the initial permeability increased from 2.78 to 3.6 as well as the optimal RL reached –61.3 dB with a thickness of 1.91 mm at 9.01 GHz for the composite after orientation. The microwave absorbing properties of oriented composite were greatly enhanced resulting from the perfect impedance match condition improved by rotational magnetic orientation. This novel rotational magnetic orientation method might provide a new way to design high performance microwave absorbers.

Bimetallic MOF-derived porous CoNi/C nanocomposites with ultra-wide band microwave absorption properties

2019 ◽  
Vol 43 (42) ◽  
pp. 16546-16554 ◽  
Author(s):  
Chang Liu ◽  
Jing Qiao ◽  
Xue Zhang ◽  
Dongmei Xu ◽  
Nannan Wu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Fine Particles ◽  
Wide Band ◽  
Ultra Wide Band ◽  
Target Product ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing ◽  
Distributed Elements

The CoNi bimetallic MOF-derived composites were synthesized in this work. The target product is composed of fine particles with uniformly distributed elements of Ni, Co, C. The CoNi/C-650 sample displays good microwave absorbing properties.

Lightweight porous Co3O4 and Co/CoO nanofibers with tunable impedance match and configuration-dependent microwave absorption properties

CrystEngComm ◽  
2017 ◽  
Vol 19 (41) ◽  
pp. 6095-6106 ◽  
Author(s):  
Biao Zhao ◽  
Jiushuai Deng ◽  
Luyang Liang ◽  
Chenyinxia Zuo ◽  
Zhongyi Bai ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Impedance Match ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
One Dimensional ◽  
Tunable Impedance

In this study, we fabricated one-dimensional porous Co3O4 and Co/CoO nanofibers by calcination of cobalt(ii) oxalate dehydrate precursors in an environment filled with air and N2, respectively.

Bio-inspired fabrication of hierarchical Ni–Fe–P coated skin collagen fibers for high-performance microwave absorption

2015 ◽  
Vol 17 (3) ◽  
pp. 2113-2120 ◽  
Author(s):  
Xiaoling Wang ◽  
Xuepin Liao ◽  
Wenhua Zhang ◽  
Bi Shi
Keyword(s):  
Microwave Absorption ◽  
High Performance ◽  
Collagen Fiber ◽  
Collagen Fibers ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Skin Collagen

Skin collagen fiber (CF) was employed for the bio-inspired fabrication of high-performance microwave absorption materials. To enhance the microwave absorption properties of CF, the well defined hierarchical 3D fibrous CF structure was covered with a Ni–Fe–P coating.

High-performance microwave absorption of flexible nanocomposites based on flower-like Co superstructures and polyvinylidene fluoride

RSC Advances ◽  
2015 ◽  
Vol 5 (68) ◽  
pp. 55468-55473 ◽  
Author(s):  
Xiao-Juan Zhang ◽  
Guo-Cheng Lv ◽  
Guang-Sheng Wang ◽  
Tian-Yu Bai ◽  
Jia-Kang Qu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Polyvinylidene Fluoride ◽  
High Performance ◽  
Absorption Properties ◽  
Microwave Absorption Properties

In this research, the flexible Co/PVDF nanocomposites with excellent microwave absorption properties were firstly prepared.

Synthesis and Microwave Absorbing Properties of Ni/SiO2 Core/Shell Particles

2010 ◽  
Vol 160-162 ◽  
pp. 945-950
Author(s):  
Bo Chong Wang ◽  
Tao Wang ◽  
Liang Qiao ◽  
Fa Shen Li
Keyword(s):  
Impedance Match ◽  
Core Shell ◽  
Frequency Range ◽  
Soft Magnetic ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Microwave Absorbing Properties ◽  
Hydrolysis Method ◽  
Microwave Absorbing ◽  
Shell Particles

In this paper, we report on the microwave absorbing properties of the Ni/SiO2 core/shell soft magnetic material which was synthesized by the tetraethyl orthosilicate (TEOS) hydrolysis method. The SEM patterns were shown that the particles of Ni/SiO2 were more dispersed and homogeneous. Microwave absorbing properties were measured in the range of 0.1–18 GHz. A reflection loss (RL) exceeding −20 dB in the frequency range of 2.6–8.9 GHz was achieved for an absorber thickness of 2.0–5.6 mm, and an optimal RL of −49.5 dB was obtained at 4.4 GHz for the thickness of 3.5 mm. The good microwave absorption properties resulted from a proper impedance match as a consequence of the insulator SiO2 around Ni particles.

Improved dielectric properties and microwave absorbing properties of SiC Nanorods/Ni core-shell structure

2017 ◽  
Vol 10 (06) ◽  
pp. 1750069 ◽  
Author(s):  
Huijing Yang ◽  
Qinglu Wang ◽  
Li Wang ◽  
Zelin Zhang ◽  
Yuanlin Li ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Microwave Absorption ◽  
Shell Structure ◽  
Solution Method ◽  
Core Shell ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Microwave Absorbing Properties ◽  
Core Shell Structure ◽  
Microwave Absorbing

We synthesized SiC nanorods/Ni core-shell structure (SiCR-Ni) by a facile solution method and researched their dielectric and microwave absorption properties. The dielectric and microwave absorbing properties of SiCR-Ni are superior to SiC nanorods (SiC[Formula: see text]. The maximum absorption peak of SiCR-Ni is almost three times that of SiCR. The bandwidth of effective absorption of SiCR-Ni covers 64% of [Formula: see text]-band. The improved properties of SiCR-Ni originate from multi-polarization in the special core-shell structure of SiCR-Ni.

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