Synthesis and Properties of Modified Potassium-Sodium Niobate Ceramics

The effect of modification (in the А and В sublattices) on the crystal structure parameters, microstructure, and dielectric and local piezoelectric properties of perovskite ceramics (1 – x )(K 0.5 Na 0.5 )NbO 3 – x La(Ag 0.5 Sb 0.5 )O 3 was studied. At increased concentration of the second component...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2021-08, Vol.66 (8), p.1257-1263
Main Authors: Politova, E. D., Kaleva, G. M., Mosunov, A. V., Sadovskaya, N. V., Il’ina, T. S., Kiselev, D. A., Shvartsman, V. V.
Format: Article
Language:English
Subjects:
Ceramics
Chemistry
Chemistry and Materials Science
Crystal structure
Curie temperature
Inorganic Chemistry
Inorganic Materials and Nanomaterials
Niobates
Perovskites
Piezoelectricity
Texturing
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Summary:The effect of modification (in the А and В sublattices) on the crystal structure parameters, microstructure, and dielectric and local piezoelectric properties of perovskite ceramics (1 – x )(K 0.5 Na 0.5 )NbO 3 – x La(Ag 0.5 Sb 0.5 )O 3 was studied. At increased concentration of the second component, the lattice volume and average grain diameter decreased, and the temperature of the polymorphic transition and Curie temperature lowered. The dielectric and effective piezoelectric properties of the samples were found to depend nonmonotonically on the composition, average grain diameter, and degree of texturing of the ceramics.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023621080234