Dielectric and electroconductive properties of AIILnnBIIInO3n+1 — type compounds (AII = Sr, Ba, Ln = La, Eu, BIII = Sc, In, n = 1, 2) with layered structure

1Titov, Yu.A, 1Slobodyanik, MS, 1Kuzmin, RN, 2Krayevska, Ya.A, 3Chumak, VV
1Taras Shevchenko National University of Kyiv
2O.O. Bogomolets National Medical University, Kyiv
3Ivan Franko State University of Zhytomyr
Dopov. Nac. akad. nauk Ukr. 2017, 1:74-81
https://doi.org/10.15407/dopovidi2017.01.074
Section: Chemistry
Language: Ukrainian
Abstract: 

With the use of the impedance spectroscopy method, the temperature and frequency dependences of the electroconductivity and the dielectric capacitivity of ceramics of AIILnnBIIInO3n+1-type compounds (AII = Sr, Ba, Ln = La, Eu, BIII = Sc, In, n = 1, 2) with layered perovskite-like structure (LPS) have been investigated. Anomalous deviations on the curves of these dependences within the temperature intervals 638—738 K, 500—700 K, and 725—800 K, accordingly, for BaLaInO4, SrLaInO4 indates and SrEuScO4 scandate, that are obviously caused by structural changes in their monolayer LPS, have been established.

Keywords: dielectric permeability, electroconductivity, impedance spectroscopy, layered structure
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