Hexagonal M-type strontium ferrite (SrFe12O19) has been fabricated through a simple self-combustion tartrate
precursor approach to producing a homogenous powder with a homogeneous shape and limited size distribution
at low-processing temperatures. The impacts of the Sr2+:Fe3+ molar ratio and the annealing temperature
on formation, morphological structure, crystallite size, and magnetic performance were studied. The powders
were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) profile, and vibrating
sample magnetometer (VSM). The development of crystalline single-phase Sr-hexagonal ferrite occurred at
≥ 1100 °C and Sr2+:Fe3+ molar ratios 1.1:12-1.3:12. Existence of α-Fe2O3 and impurities in the hexagonal powders
increases the lattice parameters while higher annealing temperature decreases it. The c/a ratios of as-prepared
samples (~3.911-3.920) are comfortably within the range of ratios for M-type structures. The platelet-like
structure has appeared at an annealing temperature ≥ 1000 °C. The wide saturation magnetization (37.26-66.19
emu/g) and coercivity (275.09-2107.8Oe) were accomplished at diverse synthesis conditions and reached the
greatest values at 1350 °C. The squareness ratios (Mr/Ms) for all studied samples are <0.5, which is for multimagnetic
domains.