Abstract
Nanodisperse Nickel Ferrite: Methods of Production, Structure and Magnetic Properties The nickel ferrite nanoparticles were prepared using combustion synthesis and plasma chemical synthesis based on evaporation of coarse-grained oxide powders in an inductively coupled air plasma, and their characteristics were compared. The crystallite size of nanoparticles produ-ced by combustion synthesis and plasma synthesis were of 29 and 45 nm respectively. The saturation magnetization of the plasma-prepared samples (43.5 emu/g) and coercivity (74 Oe) exceed values reported in literature for NiFe2O4 powders and could be explained by wide particle size distri-bution. The magnetic characteristics of the chemically prepared samples with more narrow particle size distribution were close to the respective literature data.
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