Abstract:
The structure and the valence states of iron in substituted strontium ferrite Sr$_{2/3}$La$_{1/3}$FeO$_{3-\delta}$ or Sr$_{2}$LaFe$_{3}$O$_{9-\delta}$ at various condition synthesis and heat treatment have been studied using X-ray diffraction and the Mössbauer spectroscopy. A series of vacuum annealing (10$^{-3}$ Torr, 400–650$^\circ$C) allows the observation of the evolution of the structure from the rhombohedral (for the Sr$_{2}$LaFe$_{3}$O$_{9}$) to the orthorhombic (Sr$_{2}$LaFe$_{3}$O$_{8}$) via intermediate multiphase states and also the redistribution of valence iron states.
Citation:
V. D. Sedykh, O. G. Rybchenko, N. V. Barkovskii, A. I. Ivanov, V. I. Kulakov, “Structural features of a substituted strontium ferrite Sr$_{1-x}$La$_{x}$FeO$_{3-\delta}$: I. Sr$_{2}$LaFe$_{3}$O$_{9-\delta}$”, Fizika Tverdogo Tela, 63:10 (2021), 1648–1657; Phys. Solid State, 63:12 (2021), 1775–1784
\Bibitem{SedRybBar21}
\by V.~D.~Sedykh, O.~G.~Rybchenko, N.~V.~Barkovskii, A.~I.~Ivanov, V.~I.~Kulakov
\paper Structural features of a substituted strontium ferrite Sr$_{1-x}$La$_{x}$FeO$_{3-\delta}$: I. Sr$_{2}$LaFe$_{3}$O$_{9-\delta}$
\jour Fizika Tverdogo Tela
\yr 2021
\vol 63
\issue 10
\pages 1648--1657
\mathnet{http://mi.mathnet.ru/ftt8003}
\crossref{https://doi.org/10.21883/FTT.2021.10.51418.128}
\elib{https://elibrary.ru/item.asp?id=46598585}
\transl
\jour Phys. Solid State
\yr 2021
\vol 63
\issue 12
\pages 1775--1784
\crossref{https://doi.org/10.1134/S1063783421100322}
Linking options:
https://www.mathnet.ru/eng/ftt8003
https://www.mathnet.ru/eng/ftt/v63/i10/p1648
This publication is cited in the following 2 articles:
M. S. Dmitrieva, A. I. Dmitriev, V. D. Sedykh, “Effect of Vacuum Heat Treatment on Magnetic Ordering in Substituted Orthoferrite La1 – xSrxFeO3 – δ”, Bull. Russ. Acad. Sci. Phys., 88:12 (2024), 2046
Daryn B. Borgekov, Artem L. Kozlovskiy, Rafael I. Shakirzyanov, Ainash T. Zhumazhanova, Maxim V. Zdorovets, Dmitriy I. Shlimas, “Properties of Perovskite-like Lanthanum Strontium Ferrite Ceramics with Variation in Lanthanum Concentration”, Crystals, 12:12 (2022), 1792