Open AccessСтруктурные особенности замещенного феррита стронция Sr-=SUB=-1-x-=/SUB=-La-=SUB=-x-=/SUB=-FeO-=SUB=-3-delta-=/SUB=-: I. Sr-=SUB=-2-=/SUB=-LaFe-=SUB=-3-=/SUB=-O-=SUB=-9-delta-=/SUB=-
Author(s) -
V. D. Sedykh,
O. G. Rybchenko,
Н. В. Барковский,
Alexander Ivanov,
V. I. Kulakov
Publication year - 2021
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2021.10.51418.128
Subject(s) - valence (chemistry) , orthorhombic crystal system , strontium , annealing (glass) , mössbauer spectroscopy , delta , crystallography , x ray crystallography , diffraction , chemistry , materials science , analytical chemistry (journal) , crystal structure , physics , metallurgy , organic chemistry , chromatography , optics , astronomy
The structural features and Fe valence states in the substituted strontium ferrite Sr2/3La1/3FeO3-δ (or Sr2LaFe3O9-δ) have been studied for different synthesis and heat treatment conditions by X-ray diffraction analysis and Mossbauer spectroscopy.A series of annealing of Sr2LaFe3O9-δ in vacuum ((10-3 Torr) in the temperature range of 400 - 650оС allowed us to trace the structure evolution from rhombohedral phase (Sr2LaFe3O9) to orthorhombic one (Sr2LaFe3O8) over the formation of intermediate multiphase states and the redistribution of Fe valence states as well.