物理化学学报 >> 1999, Vol. 15 >> Issue (07): 619-623.doi: 10.3866/PKU.WHXB19990708

研究论文 上一篇    下一篇

ZnxFe3-xO4复合磁性流体的磁特性

徐明祥   

  1. 浙江大学材料系,杭州 310027
  • 收稿日期:1998-10-05 修回日期:1999-01-11 发布日期:1999-07-15
  • 通讯作者: 徐明祥

Study of Magnetic Properties in ZnxFe3-xO4 Composite Magnetic Fluids

Xu Ming-Xiang   

  1. Department of Mterials Science and Engineering Zhejiang University,Hangzhou 310027
  • Received:1998-10-05 Revised:1999-01-11 Published:1999-07-15
  • Contact: Xu Ming-Xiang

摘要:

制备了配以不同表面活性剂和基液的几种接Zn的Fe3O4复合磁性液体.通过对其中磁性微粒颗粒度、分布均匀性的分析和复合磁性液体比饱和磁化强度、矫顽力等磁特性的测试,阐述了掺Zn量及表面活性剂等因素对磁性液体磁特性的影响,并对其磁性机理进行了探讨.

关键词: 复合磁性液体, 比饱和磁化强度, 矫顽力

Abstract:

The Zn-substituted Fe_3O_4 composite magnetic fluids were obtained with different surfactants and solvents. Its specific saturation magnetization(σs), the coercivity(Hc) and the size as well as the homogeneity of the composite magnetic particles were systematically measured. The influence of the Zn content and surfactant on their magnetic properties was explained.

Key words: Composite magnetic fluids, Saturation magnetization(σs), Coercivity(Hc)