Compounds Sr2Ln4Ti2Ta4O22 (Ln = La, Pr) with heteroblock slab perovskite-like structure

Authors

  • Yu. А. Titov Taras Shevchenko National University of Kiev
  • M. S. Slobodyanik Taras Shevchenko National University of Kiev
  • V. V. Chumak Ivan Franko State University of Zhytomyr

DOI:

https://doi.org/10.15407/dopovidi2016.02.096

Keywords:

layered perovskite-like structure, phase relations

Abstract

Phase ratios in systems Sr2Ln2Ti2Ta2O14+Ln2Ta2O8 (Ln = La, Pr), Sr2Ln2Ti2Ta2O14+2LnTaO4 (Ln = Nd, Sm), Sr2La2Ti2Nb2O14 + 2LaNbO4, and La4Ti4O14 + 2LaNbO4 are investigated. The formation of new compounds Sr2Ln4Ti2Ta4O22 (Ln = La, Pr) with heteroblock layered perovskitelike structure from the charge of co-precipitated hydroxycarbonates, whose heteroblocks include fourlayer block Sr2Ln2Ti2Ta2O14 and two-layer block Ln2Ta2O8, is established. The impossibility of a crystallochemical stabilization of two-layer blocks of high pressure modification Nd2Ta2O8 and La2Nb2O8 in {(4)(2)} heteroblocks of Sr-containing compounds is shown.

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References

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Published

29.09.2024

How to Cite

Titov Y. А., Slobodyanik, M. S., & Chumak, V. V. (2024). Compounds Sr2Ln4Ti2Ta4O22 (Ln = La, Pr) with heteroblock slab perovskite-like structure . Reports of the National Academy of Sciences of Ukraine, (2), 96–100. https://doi.org/10.15407/dopovidi2016.02.096

Issue

No. 2 (2016): Reports of the National Academy of Sciences of Ukraine

Section

Chemistry

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