Published April 11, 2025
| Version v1
Journal article
Open
Analysis of phase changes during synthesis of Sr2Fe1.2Mo0.8O6-δ solid solution by the solid-phase reaction method
Authors/Creators
- 1. Scientific-Practical Materials Research Centre of the NAS of Belarus, Minsk, Belarus
- 2. State Center "Belmicroanalysis" of the scientific-technical center of JSC "INTEGRAL", Minsk, Belarus
- 3. Institute of Chemistry of New Materials of the NAS of Belarus, Minsk, Belarus
- 4. National University of Science and Technology "MISIS", Moscow, Russia
Description
Phase transformations during crystallization of the magnetic metal-oxide compound Sr2Fe1.2Mo0.8O6-δ by the solid-phase reactions method from a mixture of simple reagents 2SrCO3 + 0.6Fe2O3 + 0.8MoO3 have been analyzed. By means of differential-thermal and thermogravimetric analyses it was found that the synthesis of strontium ferromolybdate of the Sr2Fe1.2Mo0.8O6-δ composition proceeds through a series of successive-parallel stages. In this way, when considering the dynamics of phase transformations, it has been found that the main accompanying compounds during the crystallization of the solid solution of double perovskite Sr2Fe1.2Mo0.8O6-δ are Fe2O3, SrCO3, SrMoO4 and SrFeO3. When analyzing the phase composition of the batch consisting of a mixture of initial reagents of stoichiometric composition: 2SrCO3 + 0.6Fe2O3 + 0.8MoO3, it was noted that with an increase in temperature, complex compounds SrMoO4, SrFeO3, and then Sr2Fe1.2Mo0.8O6-δ as well, appear almost simultaneously. This circumstance indicates that the compounds SrMoO4 and SrFeO3 are the structure-forming ones for the solid solution of ferromolybdate – strontium. With a subsequent increase in temperature to 1470 K, it was found that the dissolution of SrFeO3 with the formation of double perovskite Sr2Fe1.2Mo0.8O6-δ occurs faster than the dissolution of strontium molybdate SrMoO4. The results of the analysis indicate the difficult nature of the dynamics of solid-phase reactions during the formation of Sr2Fe1.2Mo0.8O6-δ.
Files
MoEM_article_140603.pdf
Files
(757.9 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:a16873f43161ea8094b882b76de6df29
|
718.6 kB | Preview Download |
|
md5:2d1c382de58147fd77dcfd18d08a3ba2
|
39.3 kB | Preview Download |
Additional details
References
- 1. Sarma D.D., Mahadevan P., Saha-Dasgupta T., Ray S., Kumar A. Electronic structure of Sr2FeMoO6. Physical Review Letters. 2000; 85: 2549–2552. https://doi.org/10.1103/PhysRevLett.85.2549
- 2. Navarro J., Nogues J., Munoz J.S., Fontcuberta J., Antisites and electron-doping effects on the magnetic transition of Sr2FeMoO6 double perovskite. Physical Review B. 2003; 67: 174416. https://doi.org/10.1103/PhysRevB.67.174416
- 3. Moritomo Y., Xu S., Machida A., Akimoto T., Nishibori E., Takata M., Ohoyama K. Crystal and magnetic structure of conducting double perovskite Sr2FeMoO6. Journal of the Physical Society of Japan. 2000; 69: 1723–1726. https://doi.org/10.1143/JPSJ.69.1723
- 4. Navarro J., Frontera C., Balcells LI., Martinez B., Fontcuberta J. Raising the Curie temperature in Sr2FeMoO6 double perovskites by electron doping. Physical Review B. 2001; 64: 092411–092419. https://doi.org/10.1103/PhysRevB.64.092411
- 5. Sarma D.D. A new class of magnetic materials: Sr2FeMoO6 and related compounds. Current Opinion in Solid State and Materials Science. 2001; 5: 261–268. https://dx.doi.org/10.1016/S1359-0286(01)00014-6
- 6. Liu G.Y., Rao G.H., Feng X.M., Yang H.F., Ouyang Z.W., Liu W.F., Liang J.K. Atomic ordering and magnetic properties of non-stoichiometric double-perovskite Sr2FexMo2-xO6. Journal of Physics: Condensed Matter. 2003; 15: 2053–2060. https://doi.org/10.1088/0953-8984/15/12/322
- 7. Yarmolich M., Kalanda N., Demyanov S., Terryn H., Ustarroz J., Silibin M., Gorokh G. Influence of synthesis conditions on microstructure and phase transformations of annealed Sr2FeMoO6-δ nanopowders formed by citrate-gel method. Beilstein Journal of Nanotechnology. 2016; 7: 1202–1207. https://doi.org/10.3762/bjnano.7.111
- 8. Yarmolich M., Kalanda N., Demyanov S., Fedotova Ju., Bayev V., Sobolev N., Charge ordering and magnetic properties in nanosized Sr2FeMoO6-δ powders. Physica Status Solidi B. 2016; 253: 2160–2166. https://doi.org/10.1002/pssb.201600527
- 9. Kalanda N.A., Turchenko V.A., Karpinsky D.V., Demyanov S.E., Yarmolich M.V., Balasiou M., Lupu N., Tyutyunnikov S.I., Sobolev N.A., The role of the Fe/Mo cations ordering degree and oxygen non-stoichiometry on the formation of the crystalline and magnetic structure of Sr2FeMoO6-δ. Physica Status Solidi B. 2019; 256: 1800278. https://doi.org/10.1002/pssb.201800278
- 10. Kalanda N.A., Gurskii A.L., Yarmolich M.V., Petrov A.V., Bobrikov I.A., Ivanshina O.Yu., Sumnikov S.V., Maia F., Zhaludkevich A.L., Demyanov S.E. Phase transformations at crystallization of the Sr2CrMoO6 compound. Modern Electronic Materials. 2019; 5(2): 69–75. https://doi.org/10.3897/j.moem.5.2.50758
- 11. Yarmolch M.V., Kalanda N.A., Petrov A.V., Kiselev D.A., Bosak N.A. Magnetic properties of Sr1.5La0.5FeMoO6-δ depending on the phase composition of the reaction mixture. Modern Electronic Materials. 2023; 9(4): 169–176. https://doi.org/10.3897/j.moem.9.4.116107
- 12. Farias M.B., Araujo A.J.M., Holz L.I.V., Mikhalev S.M., Paskocimas C.A., Fagg D.P., Loureiro F.J.A. Sr2Fe1.5Mo0.5O6-δ – based cathodes for solid oxide fuel cells: microstructural considerations and composite formation with Pr-doped ceria. International Journal of Hydrogen Energy. 2024; 61: 1305–1316. https://doi.org/10.1016/j.ijhydene.2024.02.363
- 13. Suchaneck G., Artiukh E. Nonstoichiometric strontium ferromolybdate as an electrode material for solid oxide fuel cells. Inorganics. 2022; 10: 231–259. https://doi.org/10.3390/inorganics10120230
- 14. Miao G., Yuan C., Chen T., Zhou Y., Zhan W., Wang S. Sr2Fe1+xMo1-xO6-δ as anode material of cathode-supported solid oxide fuel cells. International Journal of Hydrogen Energy. 2015; 41: 1104–1111. https://doi.org/10.1016/j.ijhydene.2015.12.045
- 15. Qi H., Lee Y.-L., Yang T., Li W., Li W., Ma L., Hu S., Duan Y., Hackett G., Liu X. Positive effects of H2O on the hydrogen oxidation reaction on Sr2Fe1.5Mo0.5O6-δ – based perovskite anodes for solid oxide fuel cells. ACS Catalysis. 2020; 10: 5567–5578. https://doi.org/10.1021/acscatal.9b05458
- 16. Valdes J., Resendiz D., Cuan A., Nava R., Aguilar B., Cortes-Romero C.M., Navarro O. Sol-gel synthesis of the double perovskite Sr2FeMoO6 by microwave technique. Materials. 2021; 14: 3876. https://doi.org/10.3390/ma14143876
- 17. Cernea M., Vasiliu F., Plapcianu C., Bartha C., Mercioniu I., Pasuk I., Lowndes R., Trusca R., Aldica G.V., Pintilie L. Preparation of sol-gel and solid state reaction methods and properties investigation of double perovskite Sr2FeMoO6. Journal of the European Ceramic Society. 2013; 33: 2483–2490. https://dx.doi.org/10.1016/j.jeurceramsoc.2013.03.026
- 18. Kalanda N., Yarmolich M., Petrov A., Raevski I., Kubrin S., Raevskaya S., Bobrikov I., Lazavenka A., Kim D.-H., The influence of cation ordering and oxygen nonstoichiometry on magnetic properties of Sr2FeMoO6-x in the area of Curie temperature. Journal of Magnetism and Magnetic Materials. 2020; 500: 166386. https://doi.org/10.1016/j.jmmm.2019.166386
- 19. Kraus W., Nolze G. POWDER CELL – a program for the representation and manipulation of crystal structures and calculation of the resulting X-ray powder patterns. Journal of Applied Crystallography. 1996; 29: 301–303. https://doi.org/10.1107/S0021889895014920
- 20. Rodríguez-Carvajal J. Recent developments of the program FULLPROF. Commission on powder diffraction (IUCr). Newsletter. 2001; 26: 12–19.