Figure 10.

Variation of magnetization (M) with temperature (T) in ZFC and FC modes for maghemite (γ-Fe2O3) NPs with diameters of 4.5, 8.1, and 20.4 nm, respectively

Chen et al. Nanoscale Research Letters 2009 4:1343-1350   doi:10.1007/s11671-009-9403-x