scholarly journals Microwave heating behavior and microwave absorption properties of barium titanate at high temperatures

AIP Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 065001 ◽  
Author(s):  
K. Kashimura ◽  
H. Sugawara ◽  
M. Hayashi ◽  
T. Mitani ◽  
N. Shinohara
Keyword(s):  
Barium Titanate ◽  
Microwave Heating ◽  
Microwave Absorption ◽  
High Temperatures ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Heating Behavior

scholarly journals Nanostructured Barium Titanate/Carbon Nanotubes Incorporated Polyaniline as Synergistic Electromagnetic Wave Absorbers

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Lujun Yu ◽  
Yaofeng Zhu ◽  
Chen Qian ◽  
Qiang Fu ◽  
Yongzhen Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electromagnetic Wave ◽  
Barium Titanate ◽  
Microwave Absorption ◽  
Reflection Loss ◽  
Network Structures ◽  
Conductive Network ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Electromagnetic Absorption

The three-dimensional (3D) conductive network structures formed by barium titanate/carbon nanotubes incorporated polyaniline were favorable for strengthening electromagnetic absorption capability. Herein, an easy and flexible method consisting of sol-gel technique, in situ polymerization, and subsequent mechanical method have been developed to prepare the barium titanate/carbon nanotubes incorporated polyaniline (CNTs/BaTiO3/PANI or CBP) ternary composites. The dielectric properties and microwave absorption properties of CNTs/BaTiO3/PANI composites were investigated in the frequency range of 2–18 GHz by vector network analyzer. Interestingly, it is found that the CNTs/BaTiO3/PANI composites with 3D conductive network structures presented outstanding electromagnetic absorption properties, which may be attributed to the high impedance matching behavior and improved dielectric loss ability and novel synergistic effect. Additionally, it also can be supposed that the “geometrical effect” of composite was more beneficial to absorbing the incident electromagnetic wave. The CNTs/BaTiO3/PANI composite (the mass ratio of CNTs/BaTiO3to PANI is 2 : 3) exhibits the best microwave absorption properties, of which the minimum reflection loss value can reach −30.9 dB at 8 GHz and the absorption bandwidth with a reflection loss blew −10 dB ranges from 7.5 to 10.2 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

Improved mechanical and microwave absorption properties of SiCf/SiC composites with SiO2 filler

2021 ◽  
Vol 47 (10) ◽  
pp. 14455-14463 ◽  
Author(s):  
Zhaowen Ren ◽  
Wancheng Zhou ◽  
Yuchang Qing ◽  
Shichang Duan ◽  
Haijun Pan ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Sic Composites
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