Fig. 7From: Sn2+ Doping: A Strategy for Tuning of Fe3O4 Nanoparticles Magnetization Dipping Temperature/Amplitude, Irreversibility, and Curie PointChange of magnetization (M) with temperature for pristine Fe3O4 nanoparticles at different external magnetic field (H). At H = 200 Oe, blocking temperature TB and magnetic divergence (labeled by circular ring) between the heating and cooling curves can be seen clearlyBack to article page