Tailoring SrFe12O19 – MoS2 Composites For Enhanced Microwave Absorption Performance in X-band

The electromagnetic wave-absorbing composites, incorporating strontium hexaferrite and molybdenum disulfide (SrFe₁₂O₁₉-MoS₂), are synthesized by mixing in different weight ratios. In the present work, strontium hexaferrite (SrFe₁₂O₁₉) is developed through a low-temperature auto-combustion method while two-dimensional molybdenum disulfide (MoS₂) is synthesized by a facile hydrothermal process. The materials and their composites undergo analysis using characterization techniques such as X-ray diffraction (XRD), fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), and vibrating sample magnetometer (VSM) to assess their structural, morphological, and magnetic properties, respectively. The minimal reflection loss (RL_min) of – 47.35 dB is observed at 8.66 GHz for the SrFe₁₂O₁₉-MoS₂ (50%-50%) composite cast into pellets for microwave absorption analysis in the X-band frequency range. This RL_min is obtained with a sample thickness of 1.7 mm. An adequate bandwidth of 3.1 GHz, representing 77.5% of the entire X band, is observed for a loss below -10 dB. The synergistic interaction between magnetism and dielectricity makes it an efficient electromagnetic absorber for modern technologies.