PREPARATION AND PECULIARITIES OF TWO-SLAB INDATES BaNd2−xSmxIn2O7 FORMATION

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DOI:

https://doi.org/10.15407/dopovidi2023.03.082

Keywords:

compounds of An+1BnO3n+1 type, mechanism of formation, slab perovskite-like structure

Abstract

The main regularities of isovalent substitution effect of A-position atoms in the slab perovskite-like structure of BaNd2In2O7 indate on the formation mechanisms of two-slab phases BaNd2−xSmxIn2O7 type (х = 0, 1, 1.6 and 1.8) have been established using X-ray powder diffraction methods. It has been demonstrated that the staging mechanisms of formation and the sequence of phase transformations are determined by both the composition and the degree of substitution of neodymium atoms. It has been determined that the formation of a highly ordered slab structure of BaNd2−xSmxIn2O7 (x = 0 and 1) occurs at T > 1570 K through the structural transformation of an intermediate three-dimensional defective perovskite with a the general composition of (BayLnz)InO3−d, which exhibits a statistical distribution of Ba, Ln atoms, and oxygen vacancies. The formation of the two-slab BaNd2−xSmxIn2O7 (x = 1.6 and 1.8) occurs in two mechanisms: by the interaction of defective rhombic perovskite (BayLnz)InO3−d with the intermediate phase Ba(In,Sm,Nd)O4 and by structural transformation of the defective perovskite
(BayLnz)InO3−d. The optimal conditions for synthesizing single-phase  BaNd2−xSmxIn2O7 with a two-slab perovskite-like structure were determined.

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References

Kato, S., Ogasawara, M., Sugai, M. & Nakata, S. (2002). Synthesis and oxide ion conductivity of new layered perovskite La1–xSr1+xInO4–d. Solid state ionics, 149, No. 1-2, pp. 53-57. https://doi.org/10.1016/S0167-2738(02)00138-8

Schaak, R. E. & Mallouk, T. E. (2002). Perovskites by design: a toolbox of solid-state reactions. Chem. Mater., 14, No. 4, pp. 1455-1471. https://doi.org/10.1021/cm010689m

Xiao, H., Liu, P., Wang, W., Ran, R., Zhou, W. & Shao, Z. (2020). Ruddlesden–Popper perovskite oxides for photocatalysis-based water splitting and wastewater treatment. Energy Fuels, 34, No. 8, pp. 9208-9221.

https://doi.org/10.1021/acs.energyfuels.0c02301

Ding, P., Li, W., Zhao, H., Wu, C., Zhao, L., Dong, B. & Wang, S. (2021). Review on Ruddlesden–Popper perovskites as cathode for solid oxide fuel cells. J. Phys. Mater., 4, No. 2, 022002. https://doi.org/10.1088/2515-7639/abe392

Rao, C. N. R. & Raveau, B. (1998). Transition metal oxides: structure, properties, and synthesis of ceramic oxides. New York, Chichester, Wemheim: Villey-VCH.

Titov, Yu., Nedilko, S. G., Chornii, V., Scherbatskii, V., Belyavina, N., Markiv, V. & Polubinskii, V. (2015). Crystal structure and luminescence of layered perovskites Sr3LnInSnO8. Solid State Phenom., 230, pp. 67-72.

https://doi.org/10.4028/www.scientific.net/SSP.230.67

Titov, Y., Belyavina, N., Slobodyanik, M., Nakonechna, O., Strutynska, N. & Tymoshenko, M. (2020). Effect of isovalent substitution on the crystal structure and properties of two-slab indates BaLa2–xSmxIn2O7. Open Chem., 18, No. 1, pp. 1294-1303. https://doi.org/10.1515/chem-2020-0090

Titov, Y. O., Slobodyanik, M. S. & Krayevska, Ya. A. (2011). Peculiarities of mechanisms formation of slab indates AIILanInnO3n+1 (AII = Sr, Ba) from the systems of co-crystallized nitrates. Ukr. Khim. Zhurn., 77, No. 6, pp. 73-76 (in Ukrainian).

Titov, Y. O., Slobodyanik, M. S., Krayevska, Ya. A. & Chumak, V. V. (2008). Peculiarities of formation of slab scandates (SrO)(LaScO3)n from the systems of co-precipitated hydroxy-oxalates and crystallized nitrates. Ukr. Khim. Zhurn., 74, No. 9, pp. 34-39 (in Ukrainian).

Titov, Y. O., Slobodyanik, M. S., Krayevska, Ya. A. & Chumak, V. V. (2010). Peculiarities of mechanisms formation of slab scandates SrLnnScnO3n+1 from the systems of co-crystallized nitrates. Ukr. Khim. Zhurn., 76, No. 5, pp. 11-16 (in Ukrainian).

Dashevskyi, M., Boshko, O., Nakonechna, O. & Belyavina, N. (2017). Phase transformations in equiatomic Y—Cu powder mixture at mechanical milling. Metallofiz. Noveishie Tekhnol., 39, No. 4, pp. 541-552. https://doi.org/10.15407/mfint.39.04.0541

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Published

11.07.2023

How to Cite

Titov, Y., Strutynska, N., & Chumak, V. (2023). PREPARATION AND PECULIARITIES OF TWO-SLAB INDATES BaNd2−xSmxIn2O7 FORMATION. Reports of the National Academy of Sciences of Ukraine, (3), 82–88. https://doi.org/10.15407/dopovidi2023.03.082

Issue

No. 3 (2023): Reports of the National Academy of Sciences of Ukraine

Section

Chemistry

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