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Hyperfine Interactions

, Volume 57, Issue 1–4, pp 1871–1874 | Cite as

The surfactant influence on the surface magnetic properties of Fe3O4 microcrystals

  • Zheng Hu
  • Xielong Yang
  • Rongchuan Liu
  • Xinshu Chen
  • Yuanhui He
  • Yuanfu Hsia
Surface Phenomena, Catalysis, Corrosion

Abstract

Mössbauer measurements, electron microscopy and infrared spectroscopy, have been used for investigating the Fe3O4 microcrystals coated with different surfactants. The experimental results show that the surface condition of the system changes and the anisotropy energy constantK of Fe3O4 microcrystals increases effectively when the surfactants being added. The spin pinning effect on a sample surface was observed and the pinning depth and the pinning direction were estimated. Besides, it has been shown that the anisotropy energy constantK of the coated Fe3O4 has an abrupt change nearbyTv.

Keywords

Spectroscopy Microscopy Electron Microscopy Surfactant Thin Film 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1990

Authors and Affiliations

  • Zheng Hu
    • 1
  • Xielong Yang
    • 2
  • Rongchuan Liu
    • 1
  • Xinshu Chen
    • 3
  • Yuanhui He
    • 3
  • Yuanfu Hsia
    • 1
  1. 1.Department of PhysicsNanjing UniversityNanjingChina
  2. 2.Department of PhysicsEast China Normal UniversityShanghaiChina
  3. 3.The Southwest Institute for Applied MagnetismMiangyangChina

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