&lt;strong&gt;Preparation and characterization of templated barium hexaferrite (BaFe&lt;sub&gt;12&lt;/sub&gt;O&lt;sub&gt;19&lt;/sub&gt;) nanoparticles and investigation of its microwave absorption properties by silicone rubber matrix at x-band frequency&lt;/strong&gt;

Shahrzad Javanshir,Maryam Ahmadi,Reza Peymanfar,Neda Abdolrahimi

doi:10.3390/ecsoc-21-04814

Abstract

Recently, barium ferrite nanoparticles have attracted substantial attention because of widespread applications in catalytic degradations, credit cards, storage hardwares, sensors, microwave devices, permanent magnets, high frequencies, photocatalytic catalysts, and etc. In this research, templated BaFe12O19 nanoparticles were prepared through the sol-gel method by use of cotton as a template in the sol step. Finally, templated nanoparticles were blended in the silicone rubber matrix and then prepared nanocomposite molded to investigate of microwave absorption properties at x-band frequency. Templated barium hexaferrite nanoparticles were characterized by Fourier transform infrared (FT-IR), diffuse reflection spectroscopy (DRS), vibrating sample magnetometer (VSM), field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and microwave absorption characteristics were obtained by vector network analyzer (VNA). Microwave absorption curves showed that Templated BaFe12O19/silicone rubber nanocomposite absorbed 65.80% of microwaves at 9.87 GHz.

Highlights

The issue of fighting against electromagnetic disturbance involves a significant technical aspect exposed to a decrease in the electromagnetic interruption (EMI) which happens between electronic tools
Microwave protecting tools should possess particular qualities; as appropriate shielding effectiveness (SE), proper mechanical features, lightness, suitable processability, and cost-effective. This can be regarded as a ground breaking effort that shows the electromagnetic protecting efficiency of nanoferrite, extended graphite (Carbon material), and Polyaniline compound for industrial use (Electromagnetic Interference Shielding) that is adjustable with findings that are revealed experimentally [1]
BaFe12O19 is often symbolized as M-type BaM; it has the lowermost price of magnetic energy and is utilized for many purposes including long-lasting magnets, special media used for magnetic record and microwave tools because of its outstanding physical and chemical features like great curie temperature, great magnetocrystalline anisotropy, perfect chemical stability, satisfactory mechanical hardness, great resistance against corrosion, and comparatively high saturation magnetization [4]

Summary

Introduction

The issue of fighting against electromagnetic disturbance involves a significant technical aspect exposed to a decrease in the electromagnetic interruption (EMI) which happens between electronic tools. Microwave protecting tools should possess particular qualities; as appropriate shielding effectiveness (SE), proper mechanical features, lightness, suitable processability, and cost-effective. Barium ferrite is a renowned inflexible magnetic material possessing great capacity of magnetization, outstanding chemical constancy, perfect coercivity, and anti-erosion features.

Results

Conclusion