Colloid and Polymer Science

, Volume 289, Issue 1, pp 79–83 | Cite as

Nano-sized Fe soft-magnetic particle and its magnetorheology

  • I. G. Kim
  • K. H. Song
  • B. O. Park
  • B. I. Choi
  • Hyoung Jin Choi
Short Communication


As a new magnetoresponsive magnetorheological (MR) material under an applied magnetic field, magnetic Fe nanoparticles were synthesized from a simple process of thermal decomposition of pentacarbonyl iron using oleyl amine and kerosene at 150 °C. Morphology of the fabricated Fe nanoparticle was examined using both scanning electron microscopy and transmission electron microscopy. MR characteristics of the nano-sized magnetic particle-based MR fluid dispersed in non-magnetic carrier fluid was investigated using a rotational rheometer under different external magnetic field strengths, focusing on their flow behaviors at a steady shear mode and yield stress. Flow curve was also found to be fitted well with the Casson equation.


Magnetic particle Magnetorheological fluid Nanoparticle 



This work was supported by SK Energy, Korea.


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • I. G. Kim
    • 1
  • K. H. Song
    • 1
  • B. O. Park
    • 1
  • B. I. Choi
    • 1
  • Hyoung Jin Choi
    • 1
  1. 1.Department of Polymer Science and EngineeringInha UniversityIncheonKorea

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