Effects of Substitutions of Titanium(IV) Ions by Iron(III) and Niobium(V) Ions on Phase Formation in Lanthanide-Containing Systems Comprising Layered Bismuth Titanate Ferrite

Abstract: Phase formation in the series of Bi3Nd2Fe1 + yTi3 – 2yNbyO15 and Bi3Tb2Fe1 + yTi3 – 2yNbyO15 (y = 0.0–0.6 and Δy = 0.2) samples is studied. When Bi3Nd2Fe1 + yTi3 – 2yNbyO15 solid solutions (ss) are doped with niobium(V) ions, the formation of Bi3Nd2FeTi3O15 layered perovskite, a member of the Aurivillius phase family of general formula Am – 1Bi2BmO3m + 3 (m = 4), is not dominant in samples where y ≥ 0.2. Bi4Ti3O12 (m = 3) and NdFeO3 phases are formed in the course of phase interaction under the chosen conditions. With higher niobium(V) amounts, a Bi2Ti2O7-base pyrochlore ss phase is formed in the Bi3Tb2Fe1 + yTi3 – 2yNbyO15 multicomponent system. Dielectric spectroscopy shows that the phases in samples of both series where y > 0.0 undergo structural alterations associated with magnetic and electric ordering. © 2020, Pleiades Publishing, Ltd.

Authors
Mitrofanova A.V. 1 , Fortal’nova E.A. 1 , Safronenko M.G. 1 , Politova E.D. 2 , Mosunov A.V. 3 , Venskovskii N.U. 1
Journal
Russian Journal of Inorganic Chemistry
Publisher
IAPC Nauka/Interperiodica
Number of issue
11
Language
English
Pages
1654-1661
Status
Published
Link
External link
DOI
10.1134/S0036023620110133
Volume
65
Year
2020
Organizations
  • 1 Russian University of Peoples Friendship, Moscow, 117198, Russian Federation
  • 2 Semenov Federal Research Center for Chemical Physics, Moscow, 119991, Russian Federation
  • 3 Moscow State University, Moscow, 119991, Russian Federation
Keywords
Aurivillius phase; layered perovskite; phase formation; phase transitions; pyrochlore structure
Date of creation
20.04.2021
Date of change
20.04.2021
Short link
https://repository.rudn.ru/en/records/article/record/72600/
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