Ultra-Small Fatty Acid-Stabilized Magnetite Nanocolloids Synthesized by In Situ Hydrolytic Precipitation

Figure 6

Plot of induced magnetizations for the different sized OA-stabilized M³NPs (inset: representative field-dependent magnetization (M-H) curve showing the characteristic superparamagnetic behavior). With the reduction of the particle size and the increase in the OA concentration, magnetization decreased from 80  reaching 43 , which is higher than the values typically observed for their respective ultra-small iron oxide nanocrystals.