Synthesis and Comparative Study of the Microstructure and Properties of LiNbO3 and LiNbO3:Zn Ceramics Manufactured by Sol–Gel Processes

The manufacture of LiNbO 3 and LiNbO 3 :Zn fine-grained powders by two variants of the sol–gel process was studied. The microstructure, mechanical and electric properties of LiNbO 3 and LiNbO 3 :Zn ceramics prepared from powders of various origins were studied. The ceramics prepared from powders tha...

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Published inRussian journal of inorganic chemistry Vol. 64; no. 5; pp. 673 - 679
Main Authors Palatnikov, M. N., Shcherbina, O. B., Efremov, V. V., Masloboeva, S. M., Vladimirova, S. V., Ivanenko, D. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.05.2019
Springer Nature B.V
Subjects
Ceramic powders
Ceramics
Chemistry
Chemistry and Materials Science
Comparative studies
Electric properties
Elutriation
Inorganic Chemistry
Inorganic Materials and Nanomaterials
Lithium niobates
Microstructure
Piezoelectricity
Properties (attributes)
Sol-gel processes
impedance spectroscopy
lithium niobate
microhardness
conductivity
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Summary:The manufacture of LiNbO 3 and LiNbO 3 :Zn fine-grained powders by two variants of the sol–gel process was studied. The microstructure, mechanical and electric properties of LiNbO 3 and LiNbO 3 :Zn ceramics prepared from powders of various origins were studied. The ceramics prepared from powders that had been fractionated by elutriation had uniform micro- and submicrostructure, improved strength characteristics, and ionic grain-boundary conductivity. Doping LiNbO 3 with Zn 2+ reduced the electronic conductivity of LiNbO 3 :Zn ceramics, and this allowed the ceramics to be efficiently polarized and their piezoelectric properties to be improved.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023619050152