Effect of ceramic powder particle size on the electrical properties of Li0.03Na0.97Ta0.05Nb0.95O3 ceramics

We compare the microstructure, electrical properties, and Raman spectra of ceramic samples of the Li 0.03 Na 0.97 Ta 0.05 Nb 0.95 O 3 ferroelectric solid solution prepared by a conventional ceramic processing technique using ceramic powders with different particle sizes. The Li 0.03 Na 0.97 Ta 0.05...

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Bibliographic Details
Published in:Inorganic materials 2013-02, Vol.49 (2), p.185-193
Main Authors: Palatnikov, M. N., Efremov, V. V., Sidorov, N. V., Shcherbina, O. B., Yanichev, A. A., Efremov, I. N.
Format: Article
Language:English
Subjects:
Ceramic powders
Ceramics
Chemistry
Chemistry and Materials Science
Electrical properties
Grain size
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Microstructure
Particle size
Porosity
Solid solutions
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Summary:We compare the microstructure, electrical properties, and Raman spectra of ceramic samples of the Li 0.03 Na 0.97 Ta 0.05 Nb 0.95 O 3 ferroelectric solid solution prepared by a conventional ceramic processing technique using ceramic powders with different particle sizes. The Li 0.03 Na 0.97 Ta 0.05 Nb 0.95 O 3 solid solutions prepared from the powders of different particle sizes are shown to differ only slightly in average grain size, pore size, and porosity, but the particle size of the ceramic powder has a significant effect on their electrical properties. The difference in properties between the samples is due not so much to the difference in particle size between the parent ceramic powders as to the fact that the diffusion processes involved in solid-state synthesis may give rise to composition gradients, and grains that differ in size may differ in microstructure and composition.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168513020167