Synthesis and magnetic properties of water-based Fe3O4 ferrofluid

摘要：

Stable water-based Fe3O4 ferrofluid was obtained by three steps. Fe3O4 nanoparticles with the size of about 10 nm were first prepared by chemical co-deposition method. In order to prevent Fe3O4 nanoparticles from agglomerating, they were coated by bilayer surfactants. Then, the coated Fe3O4 nanoparticles were dispersed well into water. Due to the actions of electrostatic force and hydrogen bond, the water-based Fe3O4 ferrofluids can keep stable for two years and no layered phenomenon occurred. The ferrofluid has high saturation magnetization, low remnant magnetization and coercive force.

关键词： Fe3O4 ferrofluid Water-based Coating Magnetic properties

作者: Xiu-rong Qu Shu-chen Lü Shu-fang Fu Qing-yu Meng

作者单位: Heilongjiang Key Laboratory for advanced functional Materials and excited state process,Harbin Normal University, Harbin 150001, China

会议类型: 国际会议

会议名称: 2009 International Symposium on Liquid Crystal Science and Technology(2009国际液晶科技研讨会)

会议地点: 昆明

会议语种:英文

页码: 533-536

在线出版日期: 2009-08-02（万方平台首次上网日期，不代表论文的发表时间）