Journal of the Korean Magnetics Society (한국자기학회지)

The Korean Magnetics Society (한국자기학회)
권호 표지

DYNAMICAL MAGNETIC PROPERTIES OF IRON-NITRIDE MAGNETIC FLUIDS

  • Mamiya, H. (National Research Institute for Metals) ;
  • Nakatani, I. (National Research Institute for Metals)
  • Published : 1995.10.01
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Abstract

Ac susceptibility of iron-nitride magnetic fluids with various particle number densities was measured. Therelaxation time increases rapidly as the temperature decreases or the inter-particle interaction increases. The analysis of the data suggests that the activation energy is proportional to ${(k_{B}T/J_{typ})}^{\alpha}$ with $\alpha$~-0.24 in the lower temperature range in which the thermal energy is comparable to the magnetic dipole interaction.

Keywords

References

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