all of the samples show a spotty ring pattern including the reflections of (110), (111), (200), (211), and (220) of the cubic perovskite structure without any contribution phase similarly to La0.5Sr0.5TiO3.13) All of the TEM bright-field images show nanofibers with diameters of ∼100–150 nm, corresponding to the SEM images in Figs. 2 and 3.