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A Study on Microwave Absorption Properties of Carbon Black and Ni0.6Zn0.4Fe2O4 Nanocomposites by Tuning the Matching-Absorbing Layer Structures

Ibrahim IR 1 , Matori KA 2 , Ismail I 2 , Awang Z 3 , Rusly SNA 2 , Nazlan R 4 Show all authors , Mohd Idris F 5 , Muhammad Zulkimi MM 2 , Abdullah NH 6 , Mustaffa MS 7 , Shafiee FN 6 , Ertugrul M 8

Affiliations 

  • 1 Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia. idza411@gmail.com
  • 2 Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
  • 3 Microwave Research Institute, Universiti Teknologi MARA, 40450, Shah Alam, Malaysia
  • 4 Department of Materials Technology, Faculty of Industrial Science and Technology, Universiti Malaysia Pahang, Kampus Gambang, Lebuhraya Tun Razak, Kuantan, Pahang, Malaysia
  • 5 GENIUS Insan College, Universiti Sains Islam Malaysia, PERMATA Insan Complex, Bandar Baru Nilai, 71800, Nilai, Negeri Sembilan, Malaysia
  • 6 Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
  • 7 Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
  • 8 Ataturk University, Engineering Faculty, Department of Electrical and Electronics Engineering, 25240, Erzurum, Turkey
Sci Rep, 2020 Feb 21;10(1):3135.
PMID: 32081972 DOI: 10.1038/s41598-020-60107-1

Abstract

Microwave absorption properties were systematically studied for double-layer carbon black/epoxy resin (CB) and Ni0.6Zn0.4Fe2O4/epoxy resin (F) nanocomposites in the frequency range of 8 to 18 GHz. The Ni0.6Zn0.4Fe2O4 nanoparticles were synthesized via high energy ball milling with subsequent sintering while carbon black was commercially purchased. The materials were later incorporated into epoxy resin to fabricate double-layer composite structures with total thicknesses of 2 and 3 mm. The CB1/F1, in which carbon black as matching and ferrite as absorbing layer with each thickness of 1 mm, showed the highest microwave absorption of more than 99.9%, with minimum reflection loss of -33.8 dB but with an absorption bandwidth of only 2.7 GHz. Double layer absorbers with F1/CB1(ferrite as matching and carbon black as absorbing layer with each thickness of 1 mm) structure showed the best microwave absorption performance in which more than 99% microwave energy were absorbed, with promising minimum reflection loss of -24.0 dB, along with a wider bandwidth of 4.8 GHz and yet with a reduced thickness of only 2 mm.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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