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Electromagnetic shielding performance of reduced graphene oxide reinforced iron oxide nanostructured materials prepared by polyol method

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Abstract

The relative shielding effectiveness (SE) of Fe3O4–rGO NC (nanocomposite) in the X-band frequency region is reported. The Fe3O4–rGO NC with different ratios (2:1, 1:1 and 1:2) were fabricated by polyol method and were further characterized by various physicochemical techniques. The Fe3O4–rGO NC (1:2) with 1 mm thickness shows improved total shielding efficiency of 59.41 dB at 8.29 GHz for microwave absorption. The Fe3O4 nanoparticles (NPs) (~ 5 nm) possess a significantly higher maximum saturation (Ms) 34.92 emu/g for enhanced microwave absorption. The Fe3O4–rGO NC (1:2) has exhibited higher total shielding efficiency of 59.41 dB due to its enhanced dielectric properties permeability (μ′ = 1.65 at 8.59 GHz and μ″ = 0.76 at 11.59 GHz); permittivity (ε′ = 91.38 at 11.5 GHz and ε″ = 67.54 at 8.5 GHz), and good attenuation ability. The effective shielding efficiency (SE) of Fe3O4–rGO (1:2) NC found to be 99.9995%.

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All data generated or analyzed during this study are included in this publishing article.

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Acknowledgments

The authors thank Prof. V. Subramanian, Microwave laboratory, Department of Physics, IITM for providing Vector network Analysis facility.

Funding

This work was supported by Defence Metallurgical Research Laboratory (DMRL) (Ref No: DMRL/CARS-22/TC) and Dr. NB acknowledges Department of Biotechnology, New Delhi, for financial support.

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Authors and Affiliations

  1. National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai, 600025, India

    Theertharaman Govindasamy, Manjubaashini Nandhakumar, Nibin Kolanjikombil Mathew, Rohith Vinod Kulangara & Balakumar Subramanian

  2. Microwave Laboratory, Department of Physics, Indian Institute of Technology Madras, Chennai, 600036, India

    Vinaya Kumar Asapu

  3. Advance Magnetics Group, Defence Metallurgical Research Laboratory Hyderabad, Hyderabad, 500058, India

    Saravanan Padmanapan

  4. Department of Chemistry, KPR Institute of Engineering and Technology, Coimbatore, 641407, India

    Daniel Thangadurai Thangaian

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  1. Theertharaman Govindasamy
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Material preparation, data collection, analysis and original draft writing were performed by GT, validation & editing NM, editing NKM, visualization KRV, technical support AVK, formal analysis PS, investigation TDT and supervision SB.

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Correspondence to Balakumar Subramanian.

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Govindasamy, T., Nandhakumar, M., Mathew, N.K. et al. Electromagnetic shielding performance of reduced graphene oxide reinforced iron oxide nanostructured materials prepared by polyol method. Journal of Materials Research 37, 1216–1230 (2022). https://doi.org/10.1557/s43578-022-00522-4

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