Development of Co0.7Ca0.3Fe2O4-EPDM nanocomposite for microwave application: Their rheometric behavior, surface topography and electromagnetic parameters
| Autor: | Sukhleen Bindra Narang, Charanjeet Singh, Mohamed A. Farag, Ebtesam E. Ateia, D. E. El-Nashar, Jasbir Singh |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Nanocomposite Materials science Scanning electron microscope Process Chemistry and Technology Reflection loss 02 engineering and technology Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials symbols.namesake 0103 physical sciences Materials Chemistry Ceramics and Composites symbols Dielectric loss Crystallite Composite material 0210 nano-technology Raman spectroscopy Microwave |
| Zdroj: | Ceramics International. 47:7285-7290 |
| ISSN: | 0272-8842 |
| Popis: | Flexible magnetic nanocomposite materials were prepared by incorporating cobalt/calcium ferrite nanoparticles in the ethylene propylene diene monomer (EPDM) rubber matrix. In this work, microwave characterization of 50% Co0.7Ca0.3Fe2O4 and 50% EPDM nanocomposite has been performed. Ferrite–rubber nanocomposites are important, as they are convenient for adaptive instruments wherein reflection loss (S11) and attenuation (S21) are substantial parameters. The structural characterization of the investigated nanocomposite was explored using X-ray diffraction, atomic force microscopy (AFM), Raman spectroscopy, and scanning electron microscopy (SEM). The average crystallite size of the nanocomposite was obtained at 16.52 nm. The vector network analyzer was incorporated to measure electromagnetic and scattering parameters (S) of the nanocomposite sample placed in the rectangular waveguide. There is an observation of low S11 (reflected signal) in the low-frequency regime and it increases non-monotonically with the corresponding increase in frequency. The microwave signal suffers from minimum attenuation (S21) while passing through the nanocomposite sample and remains less than −3 dB almost along with the entire test frequency range. The low magnetic and dielectric loss in the nanocomposite is in agreement with the S21 parameter as well as low coercivity, which makes it a suitable candidate for low loss application in wireless communication. |
| Databáze: | OpenAIRE |
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