Synthesis and dielectric properties in the lithium-ion conducting material La0.5Li0.5-xNaxTiO3

Ceramic samples of Na-doped lithium lanthanum titanates have been synthesized by solid-state reaction technique. Scanning electron microscopy has shown that the grain size of ceramics in La(0.5)Li(0.5-x)Na(x)TiO(3)3 solid solutions decreases with an increase in sodium concentration. Complex impedance spectroscopy measurements demonstrate that the origin of the electrical properties in La0.5Li0.5-xNaxTiO3 can be attributed to equivalent circuit consist of 3 elements, when x=0-0.4 and 2 elements when x=0.5. The dielectric constant and dielectric loss of polycrystalline samples of La0.5Li0.5-xNaxTiO3 have been investigated over a large frequency range. It has been found that the largest permittivity value is can be observed in La0.5Li0.4Na0.1TiO3 ceramic. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

Ceramic samples of Na-doped lithium lanthanum titanates were synthesized by solid-state reaction technique. The grain size of ceramics decreased with an increase in sodium concentration, and the sample with the largest dielectric constant value was La0.5Li0.4Na0.1TiO3.