In this work, the nanocrystalline MgCuZn ferrite powder was prepared through the nitrate–citrate auto-combustion route. The as-burnt powder after calcination at 600 °C, sintered at different temperatures below silver melting point in the range of 850–950 °C for 4 h. The structural and magnetic properties were investigated as a function of sintering temperatures. The X-ray diffraction patterns exhibited the formation of a single phase cubic spinel structure. The microstructural evaluations showed homogeneous grains and also revealed that the variation of sintering temperature significantly affected the densification and grain growth of the samples. The density, grain size, initial permeability (µi) and saturation magnetization (Ms) of all the samples increased with sintering temperature. The relative quality factor (RQF) also showed highest value for the sample sintered at 950 °C.
