Figure 5

The top view SEM micrographs of the Fe₃O₄ (a), Zn_0.41Fe_2.59O₄ (b), and Zn_0.99Fe_2.01O₄ (c) ferrite films as well as the cross-sectional SEM image of the Zn_0.41Fe_2.59O₄ ferrite film (d)