Study of particle-particle interaction in magnetic fluids using magnetic resonance

The magnetic resonance (MR) spectra of magnetite-based magnetic fluid are investigated in samples containing particle concentration in the range of 10/sup 14/ to 10/sup 17/ particle/cm/sup 3/. A single layer of dodecanoic acid is used as the magnetite surface coating agent while hydrocarbon is the suspending medium. Features in the MR spectra are discussed in terms of particle-particle interaction and its dependence upon particle concentration in the sample.