New La/Zn substituted strontium ferrites Sr(2 −x)Lax[Fe(2 − x)Znx]O5, (0 ≤ x ≤ 0.3) with brownmillerite- type structure are obtained and studied via X-ray phase analysis and Mössbauer spectroscopy. Depending on the conditions of synthesis, substituting Zn2+ cations can either mainly occupy tetrahedral positions in a brownmillerite structure, or be uniformly distributed between the tetrahedral and octahedral positions. It is shown that they are reversibly oxidized by atmospheric oxygen at elevated temperatures.
|Number of pages||5|
|Journal||Bulletin of the Russian Academy of Sciences: Physics|
|Publication status||Published - 1 Jul 2017|