Synthesis of barium ferrite ultrafine powders by a sol-gel combustion method using glycine gels

Barium ferrite ultrafine powders were synthesized by sol-gel combustion technique using glycine gels prepared from metal nitrates and glycine solutions. The processing parameters such as initial Fe/Ba molar ratio, glycine/nitrates molar ratio and calcination temperature have significant effects on the crystalline phase formation, microstructure and magnetic properties. The initial Fe/Ba molar ratio of 9, calcinations temperature of 900 °C and higher glycine/nitrates value are favorable for synthesis single-phase barium ferrites.