Investigation of the Structure and Magnetic and Microwave Absorption Properties of Nanocomposite PVA/Graphite/ CoFe1.97Ce0.03O4


 Composites PVA/Graphite/CoFe1.97Ce0.03O4 and PVA/CoFe1.97Ce0.03O4 were synthesized and studied. The morphology and structure of the starting materials and composites were characterized using scanning electron microscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, and infrared spectroscopy. The magnetic parameters were measured using a vibrating magnetometer. The absorptive capacity of the obtained materials was evaluated based on the results of measuring the transmission and reflection coefficients using a scalar network analyzer in the range of 8-12 GHz. The results show that the absorption characteristics of the PVA/Graphite/CoFe1.97Ce0.03O4 composite are significantly higher than those of the PVA/CoFe1.97Ce0.03O4 composites. Effective absorption is observed for the PVA/Graphite/CoFe1.97Ce0.03O4 composite in the frequency range of 8-12 GHz and corresponds to -25.08 dB/mm, which indicates excellent absorption characteristics of electromagnetic radiation in this frequency range.