MOESSBAUER SPECTROSCOPY STUDIES OF FINE FE_3O_4 PARTICLES CONTAINED IN MAGNETIC FLUIDS

摘要

Fine particles of magnetite contained in several non-magnetic carrier liquids as water, petroleum, transformer oil and paraffin oil have been investigated at 80K by Moessbauer spectros-copy. The differences observed in the hyperfine field (HF) distributions were interpreted mainly with respect to the mean diameter and the stabilization agent of colloidal particles.