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 ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Shell Thickness ◽  
Carbon Materials ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Magnetic Metal ◽  
Metal Materials ◽  
Sintering Conditions

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...

Tunable design of yolk–shell ZnFe2O4@RGO@TiO2 microspheres for enhanced high-frequency microwave absorption

2017 ◽  
Vol 4 (6) ◽  
pp. 935-945 ◽  
Author(s):  
Jiantao Feng ◽  
Yechen Wang ◽  
Yanhui Hou ◽  
Liangchao Li
Keyword(s):  
Microwave Absorption ◽  
High Frequency ◽  
Shell Thickness ◽  
Void Size ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Tio2 Microspheres ◽  
High Frequency Microwave

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

Preparation and Microwave Absorption Properties of the Fe/TiO2/Al2O3 Composites

NANO ◽  
2018 ◽  
Vol 13 (11) ◽  
pp. 1850125 ◽  
Author(s):  
Yun Li ◽  
Haifeng Cheng ◽  
Nannan Wang ◽  
Shen Zhou ◽  
Dongjin Xie ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Impedance Matching ◽  
Interfacial Polarization ◽  
Metal Nanowires ◽  
Core Shell ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Magnetic Metal ◽  
Different Diameters ◽  
Oxide Membranes

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.

Preparation and Microwave Absorption Properties of LiZn Ferrite

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

scholarly journals Effect of Reaction Time on Microwave Absorption Properties of Fe3O4 Hollow Spheres Synthesized via Ostwald Ripening

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2921 ◽  
Author(s):  
Wei Huang ◽  
Yujiang Wang ◽  
Shicheng Wei ◽  
Bo Wang ◽  
Yi Liang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Microwave Absorption ◽  
Ostwald Ripening ◽  
Impedance Matching ◽  
Hollow Spheres ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Magnetic Structures ◽  
Absorption Performance ◽  
Microwave Absorption Performance

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.

Microwave absorption properties of core double-shell FeCo/C/BaTiO3nanocomposites

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