摘要
在Massart法离子型磁性液体的制备中,Fe3O4纳米微粒经Fe(NO3)3处理后,表面生成了非磁性的包裹层.根据Fe(NO3)3处理前后的饱和磁化强度,表层的化学组成及非磁性特点,分析了处理后微粒非磁性表层的厚度,以及对合成的离子型磁性液体的体积分数和密度产生的影响.
In the process of preparing ionic magnetic fluids by Massart' s method, the nonmagnetic enclosed layer could form in the surface of Fe3O4 nanoparticles treated with Fe(NO3)3.From the saturated magnetization, the surface chemical composition and non-magnetic characteristics of both untreated and treated particles, the thickness of nonmagnetic surface laver and its effect on the volume fraction and density of the ionic magnetic fluid are analyzed.
出处
《四川师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2009年第1期85-88,共4页
Journal of Sichuan Normal University(Natural Science)
基金
重庆市自然科学基金(CSTC2007BA3031)资助项目