Tailoring Properties of Ni0.50Co0.50DyxFe2–xO4 Ceramics Using Microwave Non-Thermal Plasma for High-Frequency Devices

Dysprosium doped Ni0.50Co0.50DyxFe2−xO4 (x = 0.25, 0.50, 0.75) was synthesized via auto combustion of nitrate citrate gel. The prepared composites were given microwave plasma treatment to improve their dielectric properties for constructing high-frequency devices. X-ray diffraction analysis confirmed the production of Dy-doped cubic spinel NiCo ferrites. The average crystallite size for the untreated magnetic composite was 32.10 nm, while for plasma-treated samples was 25.17 nm. A growth in lattice parameters and decreased porosity was observed in plasma-treated composites. VSM findings revealed a decrease in saturation magnetization from 54.15 to 36.75 emu/g with an increase in Dy3+ from 0.25 to 0.50