Synergistic electromagnetic wave absorbing properties of NiFe2O4/MWCNT composites synthesized via microwave-assisted combustion method in Ku-band

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dc.contributor.authorJohari, Mohd Hilmi
dc.contributor.authorIsmail, Ismayadi
dc.contributor.authorAzis, Rabaah Syahidah
dc.contributor.authorTim, Chan Kar
dc.contributor.authorNafis, Nur Biha Mohamed
dc.contributor.authorErtugrul, Mehmet
dc.contributor.authorKaraka, Ibrahim Hakki
dc.date.accessioned2026-02-28T12:18:21Z
dc.date.available2026-02-28T12:18:21Z
dc.date.issued2025
dc.departmentBayburt Üniversitesi
dc.description.abstractThis study investigates the synthesis, microstructural characteristics, magnetic properties, and electromagnetic wave absorption performance of nickel ferrite (NiFe2O4 ) composites reinforced with multi-walled carbon nanotubes (MWCNTs) synthesized via the microwave-assisted combustion (MAC) method. X-ray diffraction (XRD) analysis confirmed the desired structure of NiFe(2)O(4 )and the successful integration of MWCNTs within the NiFe(2)O(4 )matrix. Field emission scanning electron microscopy (FESEM) analysis revealed the entanglement of MWCNTs and their significant impact on hindering particle growth, resulting in a finer particle structure. The reduction in average particle size from 1.317 mu m for pure NiFe(2)O(4 )to 0.436 mu m for NiFe2O4 with 2wt% MWCNT, representing approximately a 66.89% reduction, significantly demonstrates the effectiveness of MWCNTs in limiting particle growth and promoting a more refined particle structure. Magnetic property analyses showed a nuanced interplay between MWCNT concentration and composite behaviour, with the saturation magnetization (Ms) exhibiting substantial enhancement in the NiFe2O4 /2wt%MWCNT composite, indicative of effective alignment of magnetic moments. However, a subsequent decrease in Ms at higher MWCNT concentrations (4wt% and 6wt%) suggested potential dilution effects and disruptions in magnetic interactions within the composite. Electromagnetic wave absorption investigations revealed NiFe2O4 /4wt%MWCNT as a highly efficient absorber in the Ku-band, with superior impedance matching and a high attenuation constant. The reflection loss (RU) reached a maximum of-17.58 dB at 12.78 GHz, signifying absorption of more than 99% of the incident EM wave in the microwave range. The favourable impedance matching and high attenuation constant contributed to the superior performance of NiFe2O4/4wt%MWCNT compared to pure NiFe(2)O(4 )and MWCNT. These findings suggest the potential of NiFe2O4/MWCNT composites for applications in telecommunications, aerospace, and electronics, with opportunities for further optimization and investigation into long-term stability and durability under varying environmental conditions.
dc.description.sponsorshipMinistry of Higher Education (MOHE) Malaysia through the Fundamental Research Grant Scheme (FRGS) [FRGS/1/2023/STG07/UPM/02/8]
dc.description.sponsorshipWe acknowledge the funding provided for this project by the Ministry of Higher Education (MOHE) Malaysia through the Fundamental Research Grant Scheme (FRGS) , Grant No. FRGS/1/2023/STG07/UPM/02/8. The authors are also grateful for access to the measurement facilities offered by the Institute of Nanoscience and Nanotechnology (ION2) and the Department of Physics, Faculty of Science, Universiti Putra Malaysia.
dc.identifier.doi10.58915/ijneam.v18i3.664
dc.identifier.endpage340
dc.identifier.issn1985-5761
dc.identifier.issn2232-1535
dc.identifier.issue3
dc.identifier.scopus2-s2.0-105013267625
dc.identifier.scopusqualityQ4
dc.identifier.startpage329
dc.identifier.urihttps://doi.org/10.58915/ijneam.v18i3.664
dc.identifier.urihttps://hdl.handle.net/20.500.12403/6220
dc.identifier.volume18
dc.identifier.wosWOS:001547230800001
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherUnimap Press
dc.relation.ispartofInternational Journal of Nanoelectronics And Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260218
dc.subjectMicrowave-assisted combustion method
dc.subjectHybrid composites
dc.subjectElectromagnetic wave absorption
dc.subjectMultiwall carbon nanotubes (MWCNTs)
dc.subjectNiFe(2)O(4 )nanoparticles
dc.subjectMicrowave-assisted combustion method
dc.subjectHybrid composites
dc.subjectElectromagnetic wave absorption
dc.subjectMultiwall carbon nanotubes (MWCNTs)
dc.titleSynergistic electromagnetic wave absorbing properties of NiFe2O4/MWCNT composites synthesized via microwave-assisted combustion method in Ku-band
dc.typeArticle

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