Electromagnetic Interference (EMI) Shielding and Microwave Absorption Properties of Nickel Ferrite NiFe2O4/ PANI-PTSA Nanocomposite

The Nickel ferrite (NiFe2O4) nanoparticle size was successfully prepared using the sol-gel method, while, the conducting polymer (PANI-PTSA) the chemical oxidative method was used. The nanocomposite {NiFe2O4/PANI-PTSA} is an excellent shielding material that reduces the cross-sectional area by absorbing radar waves at X-band, then offers protection from risky microwave radiation. The specimens NF, PNF1, PNF2 and PNF3 were characterised using some techniques, for instance, X-ray diffraction (XRD), Fourier transforms infrared (FTIR) and vector network analyser (VNA). Results showed that the specimen PNF3, which mixed by ratio (3:1) and 2.1 mm thickness, got better reflection loss (R.L); { - 19.5, - 25.19, - 59.08} dB, at frequency band {8.3, 9.5, 10.7} GHz, respectively, while the power absorption was (99 %), (>99.68%), (99.99 %) in that order. Here the nanocomposite {NiFe2O4/PANI-PTSA} adds new outcomes to the electromagnetic interference (EMI) for shielding and microwave absorption in various advanced military applications at frequency band (8-12 GHz).