Graphene@Ni0.5Co0.5Fe2O4 hybrid framework with enhanced interfacial polarization for electromagnetic wave absorption

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dc.contributor.authorFatai Adisa Wahaab
dc.contributor.authorWasiu Yahya
dc.contributor.authorLawal Lanre Adebayo
dc.contributor.authorIssa Kazeem
dc.contributor.authorAbdulganiyu Abdulraheem
dc.contributor.authorBilal Alqasem
dc.contributor.authorJemilat Yetunde Yusuf
dc.contributor.authorAbibat Asabi Adekoya
dc.contributor.authorChai Mui Nyuk
dc.date.accessioned2024-06-12T16:08:43Z
dc.date.available2024-06-12T16:08:43Z
dc.date.issued2021-09-19
dc.description.abstractFabrication of smart materials for electromagnetic (EM) wave absorption has been propounded as efficient EM interference and pollution mitigation method. Herein, a porous lightweight graphene@ Ni0.5Co0.5Fe2O4 composite was prepared via a coprecipitation method. The results show that Ni0.5Co0.5Fe2O4 nanoparticles are homogeneously dispersed and anchored on the graphene flakes. Investigation of the EM waves absorption properties of the material at different filling in paraffin reveals that at 15 wt% loading, the composite absorbs large percent of the EM waves at minimal thickness. The composite attains optimum reflection loss peak -44.7 dB at 17.45 GHz, with 1.5 mm thickness. This enhanced EM wave absorption performance (at lesser thickness than Ni0.5Co0.5Fe2O4 in literature) could be ascribed to interfacial polarization and a good impedance match arising from unique pore configuration of the dielectric (graphene) and magnetic (Ni0.5Co0.5Fe2O4) composite. These results indicate that the lightweight G@Ni0.5Co0.5Fe2O4 composites with strong absorption at reduced thickness is an efficient absorber for high-frequency EM wave attenuation.
dc.identifier.doi10.1016/j.jallcom.2020.157259
dc.identifier.issn0925-8388
dc.identifier.urihttps://kwasuspace.kwasu.edu.ng/handle/123456789/1382
dc.publisherElsevier Ltd
dc.relation.ispartofJournal of Alloys and Compounds
dc.titleGraphene@Ni0.5Co0.5Fe2O4 hybrid framework with enhanced interfacial polarization for electromagnetic wave absorption
dc.typejournal-article
oaire.citation.volume854
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