Degree of phase transformations in the conditions of polythermal synthesis of Sr2–xBaxFeMoO6–δ
Creators
- 1. Scientific-Practical Materials Research Centre of NAS of Belarus, P.Brovka Str. 19, Minsk 220072, Belarus
- 2. Belarusian State University of Informatics and Radioelectronics, P.Brovka Str. 6, Minsk 220013, Belarus
- 3. LCA/CICECO, Universidade de Aveiro, 3810-193 Aveiro, Portugal
- 4. Institute of Materials Science, Kaunas University of Technology, BaršauskoStr. 59, Kaunas LT-51423, Lithuania
- 5. Department of Physics, Kaunas University of Technology, Studentu Str. 50, Kaunas LT-51368, Lithuania
Description
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 + MoO3was 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 hours and T = 1443 K in vacuum of 10-5Torr 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.
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Kalanda et al (AAM) - Vacuum 174 (2020) 109196.pdf
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- Journal article: 10.1016/j.vacuum.2020.109196 (DOI)