Study of the microstructure and microwave magnetic characteristics of Ti-doped Li–Zn ferrite

The effects of sintering temperature and Ti substitution on the microstructure and microwave magnetic properties of Li–Zn ferrites prepared by a ceramic process were investigated. The pure spinel phase of the specimens was observed from X-ray diffraction patterns. The densification and grain growth were enhanced due to the increase of sintering temperature. The grain growth had negative effects on the squareness ratio of high-porosity specimens. Moreover, the magnetic anisotropy constant (K₁) was estimated and discussed. The ferromagnetic resonance linewidth (ΔH) values measured at the Ku-band decreased by 18% owing to improved microstructure. The contributions of other linewidths to ∆H were estimated.