Sy. Lin et al., CHARACTERIZATION OF MAGHEMITE FERRIC-OXIDE CRYSTALS PROCESSED BY AN AEROSOL TECHNIQUE, Journal of magnetism and magnetic materials, 159(1-2), 1996, pp. 147-158
An aerosol technique is used to produce submicrometer-sized gamma-Fe2O
3 particles in two steps using ferrous oxalate dihydrate as the starti
ng precursor. In the first step, a submicrometer-sized powder was prod
uced by decomposing the precursor solution in an aerosol reactor. In t
he second step the powder was heat treated in a reducing ambient to pr
oduce maghemite (gamma-Fe2O3). The kinetics of the maghemite formation
are elucidated using a microscopic probe.