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Ferroelectrics Volume 436, 2012 - Issue 1
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Original Articles

The Effect of Grain Size of the Stock on Electrical Characteristics of the Li0.03Na0.97Ta0.05Nb0.95O3 Perovskite Ceramics

M. Palatnikov Institute of Chemistry and technology of rare elements and mineral raw material, Apatity, Murmansk region, Russia
,
V. Efremov Institute of Chemistry and technology of rare elements and mineral raw material, Apatity, Murmansk region, Russia
,
I. Efremov Institute of Chemistry and technology of rare elements and mineral raw material, Apatity, Murmansk region, Russia
,
O. Shcherbina Institute of Chemistry and technology of rare elements and mineral raw material, Apatity, Murmansk region, Russia
,
N. Sidorov Institute of Chemistry and technology of rare elements and mineral raw material, Apatity, Murmansk region, Russia
&
K. Bormanis Institute of Solid State Physics, University of Latvia, Riga, Latvia
Pages 72-79 | Received 27 Jul 2012, Published online: 18 Dec 2012
 
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Abstract

The microstructure and electrical properties of two samples of the ferroelectric Li0.03Na0.97Ta0.05Nb0.95O3 ceramic solid solution prepared from initial charge stocks of different dispersity by conventional ceramics technology are compared. The average size of grains and concentration of pores in the samples are found to be of little difference while the electrical properties of the ceramics are strongly affected by the grain size of the initial mixture. The difference in properties is due to conditions at the diffusion stage of the solid-phase synthesis caused by differences in composition of larger grains rather than the grain size itself.

Acknowledgments

The study has been supported by grant No 12-03-00515-a of the Russian Foundation for Fundamental Research and by Latvian Council of Science, project number 09.1548.

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