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Title: Degree of phase transformations in the conditions of polythermal synthesis of SrBaFeMoO6–δ
Author: Kalanda, Nikolay
Yarmolich, Marta
Kutuzau, Maksim
Gurskii, Alexander
Soares, Maria do Rosário Teixeira
Andrulevičius, Mindaugas
Abakevičienė, Brigita
Tamulevičius, Sigitas
Keywords: Magnetic metal oxide compound
Double perovskite
Polythermal synthesis
Differential thermal analysis
Thermogravimetric analysis
Issue Date: Apr-2020
Publisher: Elsevier
Abstract: The sequence of phase transformations during the crystallization of SrBaFeMoO6–δ by the solid-phase technique from a stoichiometric mixture of simple oxides SrCO3 + BaCO3 + 0.5Fe2O3 + MoO3 was studied. It has been established that the synthesis of barium – strontium ferromolybdate proceeds through a series of sequential - parallel stages. It was found that to minimize the effect of intermediate reaction products, it is necessary to use combined synthesis modes. As a result of using combined synthesis modes for annealing for 20 h and T = 1443 K in vacuum of 10−5 Torr at the pressure of residual oxygen gas 10−8 Pa, it was possible to obtain a single-phase barium – strontium ferromolybdate compound with superstructural ordering of iron and molybdenum cations.
Peer review: yes
DOI: 10.1016/j.vacuum.2020.109196
ISSN: 0042-207X
Appears in Collections:CICECO - Artigos

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