Influence of the isovalent substitution of la atoms in BaLa4Ti4O15 on the constitution of its slab perovskite-like structure

Authors

  • Y.A. Titov Taras Shevchenko National University of Kiev
  • N.M. Belyavina Taras Shevchenko National University of Kiev
  • M.S. Slobodyanik Taras Shevchenko National University of Kiev
  • M.V. Timoschenko Taras Shevchenko National University of Kiev
  • V.V. Chumak Zhytomyr Ivan Franko State University

DOI:

https://doi.org/10.15407/dopovidi2018.03.104

Keywords:

slab perovskite-like structure, titanate BaLa4Ti4O15, X-ray powder diffraction

Abstract

Conditions of the substitution of La for Nd atoms in slab perovskite-like structure (SPS) of the titanate BaLa4Ti4O15 are determined. SPS of phase BaLa2,5Nd1,5Ti4O15 with a degree of replacement close to maximal has been determined by X-ray powder diffraction. The analysis of the constitution of SPS BaLa2.5Nd1.5Ti4O15 has shown that the insertion of Nd atoms in SPS BaLa4Ti4O15 results in an increase of the degree of deformation of interblock polyhedra (Va,Ln)1O12 and in a decrease of the length of interblock distances (Va,Ln)1 — 3O1. Both factors destabilize SPS and limit the existence domain of solid solutions of BaLa4–xNdxTi4O15 by the value x ≤ 1.55.

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References

Sebastian, M. T. (2008). Dielectric Materials for Wireless Communication. Oxford: Elsevier.

Lichtenberg, F., Herrnberge, A. & Wiedenmann, K. (2008). Synthesis, structural, magnetic and transport properties of layered perovskite-related titanates, niobates and tantalates of the type AnBnO3n+2, AIAk-1BkO3k+1 and AmBm-1O3m. Progr. Solid State Chem., 36, No. 4, pp. 253-387. doi: https://doi.org/10.1016/j.progsolidstchem.2008.10.001

Pei, J., Yue, Z., Zhao, F., Li, W., Gui, Z. & Li, L. (2008). Preparation and characterization of citrate sol-gel derived CaLa4Ti4O15 microwave dielectric ceramics. Key Eng. Mater., 368-372, pp. 167-169. doi: https://doi.org/10.4028/www.scientific.net/KEM.368-372.167

Li, X., Zheng, X., Liang, B., Tang, D. & Zhang, X. (2008). Synthesis and properties of CaLa4Ti4O15 microwave dielectric ceramics. J. Chin. Ceram. Soc., 36, No. 12, pp. 1695-1699.

Jawahar, I. N., Santha, N. I., Sebastian, M. T. & Mohanan, P. (2002). Microwave dielectric properties of MO – La2O3 – TiO2 (M = Ca, Sr, Ba) ceramics. J. Mater. Res., 17, No. 12, pp. 3084-3089. doi: https://doi.org/10.1557/JMR.2002.0446

Titov, Yu. A., Slobodyanik, N. S. & Polubinskii, V. V. (2012). Mechanisms for the formation of laminar titanates AIIn-4La4Tin-1O3n from coprecipitated component systems. Theor. Exp. Chem., 48, No. 3, pp. 189-193. doi: https://doi.org/10.1007/s11237-012-9260-z

Markiv, V. & Belyavina, N. (1997, October). Hardware - program complex for research of polycrystalline substances on them diffraction spectra. Proceedings of the 2nd International Scientific Conference of Engineering and Functional Materials, (pp. 260-261), Lviv: Taras Shevchenko Scientific Society (in Ukrainian).

Teneze, N., Mercurio, D., Trolliard, G. & Frit, B. (2000). Cation-deficient perovskite-related compounds (Ba,La)nTin–1O3n (n = 4, 5, and 6): a Rietveld refinement from neutron powder diffraction data. Mat. Res. Bull., 35, No. 10, pp. 1603-1614. doi: https://doi.org/10.1016/S0025-5408(00)00363-9

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Published

09.05.2024

How to Cite

Titov, Y., Belyavina, N., Slobodyanik, M., Timoschenko, M., & Chumak, V. (2024). Influence of the isovalent substitution of la atoms in BaLa4Ti4O15 on the constitution of its slab perovskite-like structure . Reports of the National Academy of Sciences of Ukraine, (3), 104–109. https://doi.org/10.15407/dopovidi2018.03.104

Issue

No. 3 (2018): Reports of the National Academy of Sciences of Ukraine

Section

Chemistry

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