Abstract

An aerosol technique is used to produce submicrometer-sized γ-Fe 2O 3 particles in two steps using ferrous oxalate dihydrate as the starting precursor. In the first step, a submicrometer-sized powder was produced by decomposing the precursor solution in an aerosol reactor. In the second step the powder was heat treated in a reducing ambient to produce maghemite (γ-Fe 2O 3). The kinetics of the maghemite formation are elucidated using a microscopic probe.

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