Fig. 4: Characterization of selected perovskites.

XRD and SEM for (a) BCZM, (b) LSFM, (c) LBFC and (d) LNC. The dashed blue lines represent the XRD diffraction data, while orange is the best fit and the gray lines are the residual difference between observed and Rietveld calculated. SEM images are shown for BCZM (e, f), LSFM (g, h), LBFC (i, j) and LNC (k, l).