Alegaonkar, Ashwini P.Tripathi, Krishna C.Baskey, Himangshu B.Pardeshi, Satish K.Alegaonkar, Prashant S.2024-01-212024-08-132024-01-212024-08-132021-10-162199692X10.1002/cnma.202100301https://kr.cup.edu.in/handle/32116/3679Creating clutter in high resolution seeking trackers is of tactical importance which could be achieved by the electromagnetic interference (EMI) shielding. Herein, we report on X-band (8�12 GHz) scattering performance of nickel/nano-carbon-composites for architecting an effective EMI shield. Composite material is prepared by facile, one step, solid state combustion technique with variable 1�5 Ni % and characterized using x-ray diffractometry, infrared-,uv-visible, energy dispersive x-ray spectroscopic techniques, and scanning electron microscopy. Further, composite, transformed into coaxial and rectangular shaped specimens, are subjected to s-parameter and reflection loss studies, respectively, over 8�12 GHz. In analysis, incorporation of Ni, majorly, forms crystalline NiO (d[111]) and Ni2O3 (d[002]) phases dispersed within the nanocarbon network which are responsible to create asymmetric stretching bond between Ni?O?C ((Formula presented.) ?1130 cm?1). Dispersion facilitates synergistic magneto-dielectric coupling to provide long range ordering of polarization, mainly, via electronic transitions between Ni?3d to O?2p states to engage incident microwave power effectively. At highest Ni inclusion, composite showed>95 % shielding effectiveness with infinite bandwidth and>99 % return loss@8.97 GHz matching frequency. � 2021 Wiley-VCH GmbHen-UScompositesconstitutive parametersmicrowave spectroscopymolecular physicsNano-carbonsshielding efficiencyArticlehttps://onlinelibrary.wiley.com/doi/10.1002/cnma.202100301