Nano-SrFe12O19 particles with controlled-morphology:: Preparation by sol-gel method and magnetic properties

作者：Wang Yong-Fei; Li Qiao-Ling^*; Zhang Cun-Rui; Jing Hong-Xia

来源：Chinese Journal of Inorganic Chemistry, 2007, 23(11): 1983-1987.

• organic template agent
• morphology-controlled
• nano-SrFe12O19
• Magnetic properties

Citric acid method was used to prepare nano-SrFe12O19 powders, acicular, clavate and spindle nano-SrFe12O19 particles were pre pared through adding a small amount of different organic template agents (EDTA, melting stearic acid and tartaric acid) as dispersants in the process of the citric acid addition, because the template agent can form hydrogen bond with the excess hydroxyl of citric acid complex, and the precursor can grow directionally, compared with the former spherical nano-SrFe12O19 without organic template agent. The morphologies of nano-SrFe12O19 were characterized by TEM IR and XRD, and vibrating sample magnetometer (VSM). The coercivity was increased with the increase in the anisotropy. Mechanism of influence of organic template agents on the morphology of nano-SrFe12O19 is also preliminarily studied in this work.

• 出版日期2007-11
• 单位中北大学