“…Figure 3 summarizes the experimental and theoretical structures reported on SrBO 3-𝛿 compounds with respect to two variables, 𝛿 from 0 to 0.5 and B = Co, Fe, or Mn. [4,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38] In order to understand the ordering of oxygen ions in our SCFO films and compare with the structures reported in Figure 3, we considered the simulated STEM images of eight different structures named SrBO 3 , P L -SrBO 2.75 , BM-SrBO 2.75 , 314-SrBO 2.625 , BM-SrBO 2.625 , P L -SrBO 2.5 , BM-SrBO 2.5 , and SrBO 2 , as depicted in Figure 4. These structures were selected because they have periodic oxygen deficiency in the B-coordinated layers along the [001] direction (i.e., film growth direction).…”