Chem. J. Chinese Universities

• 研究论文 • Previous Articles     Next Articles

Preparation and Characterization of CoFe2O4/SiO2 Nano-composites

LI Hai-Bo1,2*, CHEN Jing-Yan1, LIU Mei1, FENG Ming1, HUA Jie1   

    1. College of Physics, Jilin Normal University, Siping 136000, China;
    2. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • Received:2006-08-20 Revised:1900-01-01 Online:2007-04-10 Published:2007-04-10
  • Contact: LI Hai-Bo

Abstract: CoFe2O4/SiO2 nano-composites were prepared by the sol-gel method. The changes of gels during the heat treatment and the structure, crystalline size, microstructure of CoFe2O4/SiO2 nano-composites were investigated by TG/DTA, XRD and Mössbauer Techniques. The results show that with the increase of the content of SiO2, the crystalline size of CoFe2O4 and internal magnetic fields decreased, while samples were transferred from magnetic order to superparamagneitc state.

CLC Number: 

TrendMD: