Microstructural and Magnetic Features of SrFe12 O 19 Materials Synthesized from Different Fuels by Sol-Gel Auto-Combustion Method

摘要: The nanocrystalline SrFe12O19 materials were prepared by a sol-gel auto-combustion method using different fuels such as citric acid, dextrose, aniline, and hexamine. combustion product obtained from all the except that of aniline show single phase upon annealing at 1000 ∘C/2 h. fuel shows main with α-Fe2O3 impurity. No notable change in lattice parameters is observed due to variation for materials. With little NIR relative reflectance (72–85 %) on fuels, display high wavelength range, 1500–2500 nm. photoluminescence emission spectra reveal broad peak ∼350 nm which reminiscent Ba-based hexaferrite, BaFe12O19. FESEM images expose quite dissimilar morphology various used synthesis Hysteresis loops under applied field ±1.5 T room temperature exhibit hard ferromagnetic property. produced glycine highest lowest Ms values 61.3 50.5 emu/g, respectively.