Figure 4
AFM images showing the surface morphology of BFO thin films deposited on Pt/Ti/SiO2/Si substrates at 550°C (a) and 650°C (b) and on Pt/sapphire (c) and Pt/Ti/sapphire (d) substrates at 650°C.
The scanning area is 4 × 4 μm2 and the color scale on the right side is 200 nm.
