The electron structure features in the high-temperature cubic perovskite-like ferrite La1−xSrxFeO3−δ are studied depending on concentration of disordered cation and anion defects by use of the Coherent Potential Approximatiom (CPA) taking into account the strong electronic correlations (U) in Fe d-shell. The variations of electronic-energy and magnetic characteristics are described at 0 ≤ δ ≤ 0.25 and 0 ≤ x ≤ 0.50. The spin state of iron atoms in stoichiometric δ = 0 compositions is shown to change near x = 0.4, which gives an explanation to the observed experimental data.
- coherent potential approximation
- complex cubic ferrites
- electronic structure
- magnetic moment