Effect of oxygen deficiency on the cationic states of iron in a series of oxides with various Perovskitelike structures

Compounds representing several series of complex oxides with perovskitelike structures have been studied by Mossbauer spectroscopy. Analysis of the quadrupole splitting-isomer shift diagrams constructed using the results of these measurements shows that increasing oxygen deficiency in the structures of the compounds studied is accompanied by variation of the coordination and valence state of iron.