Synthesis, magnetic and electromagnetic wave absorption properties of porous Fe3O4/Fe/SiO2 core/shell nanorods

2009 ◽  
Vol 106 (5) ◽  
pp. 054303 ◽  
Author(s):  
Y. J. Chen ◽  
P. Gao ◽  
C. L. Zhu ◽  
R. X. Wang ◽  
L. J. Wang ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Core Shell ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption

Preparation and Electromagnetic Wave Absorption Properties of Core-Shell Ni/TiO2 Microspheres

2014 ◽  
Vol 602-603 ◽  
pp. 762-766
Author(s):  
Biao Zhao ◽  
Bing Bing Fan ◽  
Hao Chen ◽  
Xiao Xuan Pian ◽  
Bin Bin Wang ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Microwave Absorption ◽  
Magnetic Loss ◽  
Core Shell ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
X Ray ◽  
Wave Absorption ◽  
Chloride Hexahydrate

The composite microspheres with Ni cores and amorphous TiO2 shells (Ni@TiO2) were synthesized by a one-pot solvothermal method at 180°C for 15 h, which used nickel chloride hexahydrate as Ni source andtetrabutyl orthotitanate as Ti source. The Ni/TiO2 core/shell composites were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX). A possible formation mechanism of core-shell Ni/TiO2 was proposed. Furthermore, the microwave absorption properties of these microspheres were investigated in terms of complex permittivity and permeability. The minimum reflection loss is-29.5 dB at 14.4 GHz for a layer of 4.0 mm thickness. Such phenomenon is attributed to the synergy effect between magnetic loss of Ni core and dielectric loss of amorphous TiO2 shell. The enhanced microwave absorption properties are also believed to be due to the unique coreshell structure. All results indicate that these Ni@TiO2 microspheres may be attractive candidate materials for electromagnetic wave absorption applications.

In situ synthesis of novel urchin-like ZnS/Ni3S2@Ni composite with a core–shell structure for efficient electromagnetic absorption

2015 ◽  
Vol 3 (41) ◽  
pp. 10862-10869 ◽  
Author(s):  
Biao Zhao ◽  
Gang Shao ◽  
Bingbing Fan ◽  
Wanyu Zhao ◽  
Shihao Zhang ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Shell Structure ◽  
In Situ Synthesis ◽  
Core Shell ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Electromagnetic Absorption ◽  
Core Shell Structure

A core–shell ternary ZnS/Ni3S2@Ni composite exhibiting superior electromagnetic wave absorption properties was synthesized.

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