Preparation and Sinterability of Mn-Zn Ferrite Powders by Sol-Gel Method
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第2期
论文作者：Wu Ze Han Zhidong Dong Limin Zhang Yaoming Zhang Xianyou
Key words：sol-gel; Mn-Zn; spinel ferrites; nano-sized powders;
Abstract: 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.
Wu Ze1，Han Zhidong1，Dong Limin1，Zhang Yaoming1，Zhang Xianyou1
(1.College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China)
Abstract: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.
Key words:sol-gel; Mn-Zn; spinel ferrites; nano-sized powders;
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