Evolution of Electronic Spectrum and Magnetic Properties of the High-Temperature Cubic Phase La1−xSrxFeO3−δ in Coherent Potential Approximation

Veronika M. Zainullina, Michael Korotin, Victor L. Kozhevnikov

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Abstract

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.

Original languageEnglish
Article number1700442
JournalPhysica Status Solidi (B) Basic Research
Volume255
Issue number6
DOIs
Publication statusPublished - Jun 2018
Externally publishedYes

Keywords

  • coherent potential approximation
  • complex cubic ferrites
  • electronic structure
  • magnetic moment

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