A novel approach to obtain superior microwave absorption using Non-Conducting polymer jacket coated Multi-Layer Hexaferrite-TMDC nanocomposite film.

[Display omitted] • Co 2 Y-hexaferrite-MoS 2 -PVDF nanocomposite film. • Non-Conducting Polymer Jacket Coated Multi-Layer structure. • Room temperature high magnetic moment of 33.32 emu/g. • High SE A has been observed −51.23 dB at 14.03 GHz frequency. • Potential candidate for EMI shielding application. This article represents the imposing electromagnetic interference (EMI) shielding behaviour of non-conducting polymer jacket-coated Co 2 Y-hexaferrite-MoS 2 binary nanofillers incorporated PVDF multi-layer nanocomposite films. The presence of Co 2 Y-hexaferrite inside PVDF enhanced the magnetic permeability, whereas the incorporation of semiconducting transition metal dichalcogenide (TMDC), MoS 2 , inside the PVDF matrix improves the polarization effects of the nanocomposite films. The crystalline phases corresponding to Co 2 Y-hexaferrite, MoS 2 nanoparticles and the multi-phase nanocomposite films have been justified using XRD analysis and Rietveld refinement study. FESEM micrographs confirm the hexagonal and cotton-ball structures of Co 2 Y-hexaferrite and MoS 2 nanoparticles, respectively; in addition, the presence of Co 2 Y-MoS 2 binary nanofillers inside the PVDF matrix has been confirmed. The stability of the nanocomposite films against electrical breakdown is clearly demonstrated by the minimum leakage current observed at 90 kV/m under J-E characteristics. The room temperature maximum magnetization of 33.32 emu/g of Co 2 Y-hexaferrite at an external magnetic field of 50,000 Oe helps in incurring magnetic losses and the corresponding improvement of shielding effectiveness due to absorption (SE A) of the nanocomposite films. This article demonstrates the modulation of SE A of the nanocomposite films depending on both the binary nanofillers loading percentage inside PVDF and the thickness of the nanocomposite films. Also, a unique mechanism corresponding to the coating of a non-conducting polymer jacket over a multi-layer structure has been opted herein to improve SE A in the frequency range of 12–18 GHz. This unique mechanism demonstrates that the maximum SE A for the non-conducting polymer jacket-coated multi-layer nanocomposite film is −51.23 dB at 14.03 GHz, and the corresponding total shielding effectiveness (SE T) is −74.51 dB at 13.23 GHz, along with > 99.9999 % attenuation. [ABSTRACT FROM AUTHOR]