Synthesis of Magnetic Manganese Ferrite  

作　　者：张变芳 

机构地区：[1]Department of Mathematics and Physics,Shijiazhuang Railway University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2007年第3期514-517,共4页武汉理工大学学报（材料科学英文版）

基　　金：the National Natural Science Foundation of China(No.50625518 and 1007413)

摘　　要：MnFe2O4 polycrystalline powders were prepared by the chemical coprecipitation method. When the reaction temperature is above 80 ℃, through depositing and washing, the MnFe2O4 can be obtained directly without calcining. However, when it is below 80 ℃, we have to calcine the precursor in order to obtain MnFe2O4, which does not result in pure spinal structure but a mixture of MnFe2O4 and α-Fe2O3. The powders＇ magnetic property was characterized with a Vibrating Sample Magnetometer. The phase structure, crystal size and lattice constant were presented by an X-ray diffractometer. In addition, the morphology of the powder was observed with a scan electron microscope and a transmission electron microscope.MnFe2O4 polycrystalline powders were prepared by the chemical coprecipitation method. When the reaction temperature is above 80 ℃, through depositing and washing, the MnFe2O4 can be obtained directly without calcining. However, when it is below 80 ℃, we have to calcine the precursor in order to obtain MnFe2O4, which does not result in pure spinal structure but a mixture of MnFe2O4 and α-Fe2O3. The powders＇ magnetic property was characterized with a Vibrating Sample Magnetometer. The phase structure, crystal size and lattice constant were presented by an X-ray diffractometer. In addition, the morphology of the powder was observed with a scan electron microscope and a transmission electron microscope.

关 键 词：polycrystalline powders chemical coprecipitation method CALCINE 

分 类 号：TF123.12[冶金工程—粉末冶金]