REMINDER: CrystEngComm - Invitation to submit an article Enhancement of the Microwave Absorption Properties by Adjusting the Sintering Conditions and Canbon Shell Thickness of Ni@C Submicrospheres

CrystEngComm ◽  
2022 ◽  
Author(s):  
Xun Shen ◽  
Shu-Hao Yang ◽  
Peng-gang Yin ◽  
Chao-Qin Li ◽  
Jinrui Ye ◽  
...  

The combination of traditional magnetic metal materials and dielectric carbon materials to improve microwave absorption properties has aroused great interest. In this article, the Ni@C submicrospheres have been successfully synthesized...

2017 ◽  
Vol 4 (6) ◽  
pp. 935-945 ◽  
Author(s):  
Jiantao Feng ◽  
Yechen Wang ◽  
Yanhui Hou ◽  
Liangchao Li

Yolk–shell ZnFe2O4@RGO@TiO2 microspheres with a tunable void size and TiO2 shell thickness possess enhanced high-frequency microwave absorption properties.


NANO ◽  
2018 ◽  
Vol 13 (11) ◽  
pp. 1850125 ◽  
Author(s):  
Yun Li ◽  
Haifeng Cheng ◽  
Nannan Wang ◽  
Shen Zhou ◽  
Dongjin Xie ◽  
...  

To reduce the imbalance of impedance matching between the magnetic metal nanowires and free space, Fe/TiO2 core/shell nanowire arrays with different diameters were fabricated in the templates of anodic aluminum oxide membranes by electrodeposition. The influences of the microstructure on the microwave absorption properties of the Fe/TiO2/Al2O3 composites were studied by the transmission/reflection waveguide method. It was demonstrated experimentally that both the interfacial polarization and the diameter of the Fe/TiO2 core/shell nanowires have critical effects on the microwave absorption properties. We also investigated the angle dependence of the microwave absorption properties. Due to the interfacial polarization and associated relaxation, the Fe/TiO2/Al2O3 composites exhibited optimal microwave absorption properties when microwave propagation direction was accordant with the axis of the nanowires. Finally, we managed to obtain an optimal reflection loss of below [Formula: see text]10[Formula: see text]dB (90% absorption) over 10.2–14.8[Formula: see text]GHz, with a thickness of 3.0[Formula: see text]mm and the minimum value of [Formula: see text]39.4[Formula: see text]dB at 11.7[Formula: see text]GHz.


2011 ◽  
Vol 3 (5) ◽  
pp. 561-562
Author(s):  
Sharadatayi Patil ◽  
◽  
Sangshetty Kalyane

2009 ◽  
Vol 25 (1) ◽  
pp. 73-76 ◽  
Author(s):  
Hong JIANG ◽  
Jia GUO ◽  
Lu ZHAO ◽  
Hong ZHU

2014 ◽  
Vol 10 (3) ◽  
pp. 422-426
Author(s):  
Ali-Sharbati ◽  
Javad-Mola Verdi Khani ◽  
G.R. Amiri ◽  
R. Mousarezaei

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2921 ◽  
Author(s):  
Wei Huang ◽  
Yujiang Wang ◽  
Shicheng Wei ◽  
Bo Wang ◽  
Yi Liang ◽  
...  

Hollow magnetic structures have great potential to be used in the microwave absorbing field. Herein, Fe3O4 hollow spheres with different levels of hollowness were synthesized by the hydrothermal method under Ostwald ripening effect. In addition to their microstructures, the microwave absorption properties of such spheres were investigated. The results show that the grain size and hollowness of Fe3O4 hollow spheres both increase as the reaction time increases. With increasing hollowness, the attenuation ability of electromagnetic wave of Fe3O4 spheres increases first and then decreases, finally increases sharply after the spheres break down. Samples with strong attenuation ability can achieve good impedance matching, which it does preferentially as the absorber thickness increases. Fe3O4 hollow spheres show the best microwave absorption performance when the reaction time is 24 h. The minimum reflection loss (RL (min)) can reach −40 dB, while the thickness is only 3.2 mm.


Nanoscale ◽  
2014 ◽  
Vol 6 (8) ◽  
pp. 3967-3971 ◽  
Author(s):  
Jingjing Jiang ◽  
Da Li ◽  
Dianyu Geng ◽  
Jing An ◽  
Jun He ◽  
...  

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