| Abstract: High purity and uniform sized cobalt microspheres were prepared via solvothermal method by using acetate cobalt as and ethanol as raw materials through one step reaction under 250 ℃. The samples were characterized by XRD, SEM and magnetic measurements. The effects of time and temperature on products were studied. The extension of the reaction time has no effect on the crystal, but only some tiny changes on the morphology of cobalt spheres and with the increasing of temperature, the cobalt crystal transforms from hcp-Co to fcc-Co. The cocercivity of the cobalt material obtained is up to 230 Oe which is higher than that of the available cobalt magnetic materials. In addition, this method has advantages such as relatively lower synthesis temperature, easier operation, shorter reaction time and lower power consumption. |
| 贺文启,肖 勇,成嘉亮,魏冠东,赵 率,易观贵,刘应亮,袁定胜,黄浪欢,谭绍早.溶剂热法制备钴微球及其表征[J].无机化学学报,2010,26(9):1685-1689. |
