Preparation and performance of NiCuZn–Co2Y composite ferrite material

Low-temperature fired composite ferrite ceramic materials were obtained by mixing sol–gel derived NiCuZn and Co2Y nanopowders and sintering at a low-temperature of 890 °C for 4 h. The composite ferrites have relatively high initial permeability (μ=30), high cut-off frequency (fr=210 MHz) and high resistivity (ρ>1010 Ω cm). The influences of different composition and various sintering aids on the properties of the low-temperature sintered composite ferrite were investigated. The microstructures of the sintered ceramics were observed and analyzed by SEM.