Effect of lithium carbonate on the ferroelectric properties of lead ferroniobate ceramics

We have studied the grain and crystal structures and the dielectric (300–700 K) and piezoelectric characteristics of ceramic samples of unmodified multiferroic lead ferroniobate and materials modified with lithium carbonate above stoichiometry during synthesis. The addition of the modifier has been...

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Bibliographic Details
Published in:Inorganic materials 2016, Vol.52 (1), p.76-82
Main Authors: Boldyrev, N. A., Pavlenko, A. V., Reznichenko, L. A., Verbenko, I. A., Konstantinov, G. M., Shilkina, L. A.
Format: Article
Language:English
Subjects:
Cations
Ceramics
Chemistry
Chemistry and Materials Science
Crystal structure
Dielectrics
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Lithium
Lithium carbonate
Materials Science
Piezoelectricity
Synthesis
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Summary:We have studied the grain and crystal structures and the dielectric (300–700 K) and piezoelectric characteristics of ceramic samples of unmodified multiferroic lead ferroniobate and materials modified with lithium carbonate above stoichiometry during synthesis. The addition of the modifier has been shown to improve the microstructure of the samples, increase their resistivity, improve their dielectric controllability, and raise their piezoelectric activity. The observed effects have been tentatively attributed to the formation of Li-containing liquid phases during synthesis of the material and to partial Li cation incorporation into the crystal structure of the host compound. The optimal modifier concentration is 1–2 wt %.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168516010015