Figure 7
From: Optical properties of epitaxial BiFeO3 thin film grown on SrRuO3-buffered SrTiO3 substrate
Plot of ( α▪E )nvs photon energy E . (a) n = 2 and (b) n = 1/2. The plots suggest that the BFO has a direct bandgap of 2.68 eV.
Figure 7 | Nanoscale Research Letters