Abstrakt
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.