Sn Doping: A Strategy for Tuning of FeO Nanoparticles Magnetization Dipping Temperature/Amplitude, Irreversibility, and Curie Point.

Doped magnetite (SnFeO) nanoparticles (NPs) (12-50 nm) with different amount of Sn ions (x) were synthesized using co-precipitation method. Sn doping reduces the anticipated oxidation of FeO NPs to maghemite (γ-FeO), making them attractive in several magnetic applications. Detailed characterizations during heating-cooling cycles revealed the possibility of tuning the unusual observed magnetization dipping temperature/amplitude, irreversibility, and Curie point of these NPs.