Enhanced microwave absorption properties of PMMA modified MnFe2O4–polyaniline nanocomposites

2019 ◽  
Vol 21 (9) ◽  
pp. 5068-5077 ◽  
Author(s):  
R. V. Lakshmi ◽  
Parthasarathi Bera ◽  
R. P. S. Chakradhar ◽  
Balamati Choudhury ◽  
Shital Patangrao Pawar ◽  
...  
Keyword(s):  
Combustion Synthesis ◽  
Microwave Absorption ◽  
Polymethyl Methacrylate ◽  
Electromagnetic Interference ◽  
Solution Combustion Synthesis ◽  
Emi Shielding ◽  
Solution Combustion ◽  
Absorption Properties ◽  
Microwave Absorption Properties

Nanocomposites consisting of polymethyl methacrylate modified MnFe2O4 prepared by solution combustion synthesis and polyaniline exhibit enhanced electromagnetic interference (EMI) shielding property.

Magnetic and Microwave Absorption Properties of Magnetite-Durian Shell Nanocomposite Sheet in Gigahertz Range

2018 ◽  
Vol 775 ◽  
pp. 217-223
Author(s):  
Afraha Baiti Arif ◽  
Rose Farahiyan Munawar ◽  
Qumrul Ahsan ◽  
Maisarah Abu
Keyword(s):  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Filler Content ◽  
Spherical Shape ◽  
Constant Thickness ◽  
Frequency Range ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Weight Percentage ◽  
Durio Zibethinus

In this paper, a novel microwave absorber of thin, light weight, flexible, green and low cost magnetic nanocomposite sheet that can work in high frequency range is fabricated. The vast and increasing numbers in electronic and telecommunication devices has create electromagnetic interference (EMI) in which may lead to application disturbance. Therefore, electromagnetic (EM) wave absorber with the ability of high absorption rate is strongly demanded. Here, durian shell (Durio zibethinus Murray) embedded magnetite (Fe3O4) nanocomposite sheets were prepared via pulping and lumen loading technique. The nanocomposite sheets were fabricated by varying the weight percentage of the filler content (2-10 wt% of Fe3O4) at constant thickness and varying the thickness of the sheets (0.1-1.0 mm) at constant filler content. FESEM micrograph shows that the Fe3O4 nanoparticles are in cubical and spherical shape with the 20–50 nm of size range. The microwave absorption properties of the sheets were tested by a vector network analyze (VNA) in the frequency range of 4-18 GHz. The samples were also tested using vibrating sample magnetometer (VSM) in order to study the magnetic properties. The absorption or maximum reflection loss (RL) of the samples increases continually and the increase of both filler content and sample thickness has led to the shift of dip to lower frequency region.

Microwave absorption properties of LiNb3O8 in X-band prepared by combustion synthesis

2015 ◽  
Author(s):  
J. Pundareekam Goud ◽  
Bashaiah Sindam ◽  
Anil Tumuluri ◽  
K. C. James Raju
Keyword(s):  
Combustion Synthesis ◽  
Microwave Absorption ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
X Band
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