Magnetic Properties and Structural Features of Nanocomposites Based on CoFe2O4, NiFe2O4, CuFe2O4 Ferrites, Synthesized in Low Temperature Underwater Plasma

A combination of X-ray diffraction, Mössbauer spectroscopy, and measurements of magnetic characteristics are used to study the crystal structure, morphology, and magnetic properties of nanocomposite powders based on transition metals Ni, Co, Cu, and Fe, synthesized in low-temperature underwater plasma for the first time. Results demonstrate the possibility of synthesizing nanocomposites with given contents of NiFe2O4, CoFe2O4, and Ni1 – xCuхFe2O4 ferrites, which ensure small ferromagnetic resonance linewidths, and ε-Fe2O3, which has high frequency resonance in the millimeter range of electromagnetic radiation.