Fig. 39
From: Research Progress in Rare Earth-Doped Perovskite Manganite Oxide Nanostructures
a Plots of (Eα(E))2 versus photon energy (E) of the LSMO films grown under different oxygen pressures. The direct transitions are identified by extrapolation of the straight line portions to energy axis. b Plots of (Eα (E))1/2 versus photon energy (E) of the LSMO films grown under oxygen pressures of 10 Pa and 0.5 Pa. Linear regions occur that are indicative of indirect transitions in the LSMO films grown under oxygen pressure of 10 and the amorphous nature for LSMO films grown under oxygen pressure of 0.5 Pa. Reproduced with permission of [240]