Preparation and Sinterability of Mn-Zn Ferrite Powders by Sol-Gel Method

• 作 者: 董丽敏 韩志东 张耀明 吴泽 张显友
• 机 构: College of Materials Science and Engineering Harbin University of Science and Technology,College of
• 出 处: Journal of Rare Earths
• 发表日期: 2006年S1期
• 关键词: calcined ferrite Sintering spinel powders nitrate fired amorphous dosage dissolv

Mn-Zn spinel ferrites were synthesized by sol-gel method. Effects of calcined temperature on structure and particle size of MnZnFe2O4 were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD patterns indicate that the ultra fine Mn-Zn ferrite exhibits a spinel crystal structure. SEM images show that the powder fired at 900℃for 2 h has an average diameter of 60 ~ 90 nm. The particle size becomes larger with the increasing of calcined temperature and the distribution of particle becomes even more homogeneous. Sintering behaviors of synthesized ferrite powders depend on the powder characteristics and high temperatures have induced the good crystallization of particles.

Mn-Zn spinel ferrites were synthesized by sol-gel method. Effects of calcined temperature on structure and particle size of MnZnFe2O4 were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD patterns indicate that the ultra fine Mn -Zn ferrite exhibits a spinel crystal structure. SEM images show that the powder fired at 900 ° C for 2 h has an average diameter of 60-90 nm. The particle size becomes larger with the increasing of calcined temperature and the distribution of particles becomes even more homogeneous. Sintering behaviors of synthesized ferrite powders depend on the powder characteristics and high temperatures have induced the good crystallization of particles.