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Enhanced microwave absorption performance of BiFeO3 nanopowders coated with Polyindole-PANI co-polymer in ku band frequency

Alamri, S ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jmmm.2022.169568
  3. Publisher: Elsevier B.V , 2022
  4. Abstract:
  5. It's still a significant difficulty to find microwave absorbers that have outstanding microwave dissipation performance in hostile environments. Herein, the core–shell structure of polyindole-PANI co-polymer@BiFeO3 nanocomposite is successfully prepared via in-situ polymerization method. The introduction of a co-polymer shell on the surface of magnetic BiFeO3 nanoparticles considerably tuned the attenuation constant and impedance matching characteristics. The electromagnetic characteristics and microwave absorption feature of the polyindole-PANI co-polymer@BiFeO3 nanocomposites may be found to be influenced by filler loading content regulation. The sample containing 40 wt% of polyindole-PANI co-polymer@BiFeO3 nanocomposite with a thickness of 1.5 mm had a minimum reflection loss of −17.8 dB and a 3.5 GHz effective absorption bandwidth at 13.6 GHz frequency. Polyindole-PANI co-polymer@BiFeO3 nanocomposite with outstanding microwave dissipation capabilities might be useful in a wide range of high-frequency wave applications. © 2022 Elsevier B.V
  6. Keywords:
  7. BiFeO3 ; Co-polymer ; Core-Shell ; Interfacial polarization ; Bismuth compounds ; Filled polymers ; Microwaves ; Nanocomposites ; Absorption performance ; Band frequencies ; Co-polymers ; Core shell ; Ku band ; Microwave absorption ; Microwave dissipation ; Nano powders ; Polyindoles ; Iron compounds
  8. Source: Journal of Magnetism and Magnetic Materials ; Volume 560 , 2022 ; 03048853 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0304885322004863