Figure 4

TEM Characterization of nano/microstructures Fe₃O₄ NPs. (A) TEM micrograph, (B) HRTEM micrograph, (C) SAED pattern, and (D) histogram of size distribution; planar distance and the bragg reflections are indicated inside each figure, respectively, corresponding to Fe₃O₄ lattice spaces of crystallography (111), (220), (311) and (422).