Synthesis and Comparative Study of the Microstructure and Properties of LiNbO3 and LiNbO3:Zn Ceramics Manufactured by Sol–Gel Processes
М. Н. ПалатниковTananaev Institute of Chemistry and Technology of Rare-Earth Elements and Mineral Resources, Kola Research Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184209, RussiaО. Б. ЩербинаTananaev Institute of Chemistry and Technology of Rare-Earth Elements and Mineral Resources, Kola Research Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184209, RussiaВ. В. ЕфремовTananaev Institute of Chemistry and Technology of Rare-Earth Elements and Mineral Resources, Kola Research Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184209, RussiaС. М. МаслобоеваTananaev Institute of Chemistry and Technology of Rare-Earth Elements and Mineral Resources, Kola Research Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184209, RussiaS. VladimirovaTananaev Institute of Chemistry and Technology of Rare-Earth Elements and Mineral Resources, Kola Research Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184209, RussiaД. В. ИваненкоTananaev Institute of Chemistry and Technology of Rare-Earth Elements and Mineral Resources, Kola Research Center, Russian Academy of Sciences, Apatity, Murmansk oblast, 184209, Russia
2019en
ABI
Аннотация
The manufacture of LiNbO3 and LiNbO3:Zn fine-grained powders by two variants of the sol–gel process was studied. The microstructure, mechanical and electric properties of LiNbO3 and LiNbO3: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 LiNbO3 with Zn2+ reduced the electronic conductivity of LiNbO3:Zn ceramics, and this allowed the ceramics to be efficiently polarized and their piezoelectric properties to be improved.
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