Peculiarities of Modified Ceramics (Na0.5Bi0.5)TiO3–BaTiO3–(K0.5Na0.5)NbO3.

Authors :: Kaleva, G. M.
Politova, E. D.
Mosunov, A. V.
Ilina, T. S.
Kiselev, D. A.
Source :: Russian Journal of Physical Chemistry; May2023, Vol. 97 Issue 5, p965-970, 6p
Publication Year :: 2023
Abstract: Single-phase ceramic samples with new compositions (1 – x – у)(Na<subscript>0.5</subscript>Bi<subscript>0.5</subscript>)TiO<subscript>3</subscript>–хBaTiO<subscript>3</subscript>–у(K<subscript>0.5</subscript>Na<subscript>0.5</subscript>)NbO<subscript>3</subscript> (x = 0.05, у = 0–0.15) modified with ZnO and GeO<subscript>2</subscript> additions were obtained by solid-phase synthesis. Their crystal structure, microstructure, and dielectric and local piezoelectric properties were studied. A phase with a perovskite structure with a pseudocubic unit cell was found to form in all of the synthesized samples; it was shown that the unit cell volume increased as a result of the partial replacement of base cations by complex additive cations. The ferroelectric phase transitions were confirmed by dielectric spectroscopy. Residual piezoelectric hysteresis loops were obtained for the synthesized samples in the polarization switching spectroscopy mode, which confirmed the switching of ferroelectric polarization. [ABSTRACT FROM AUTHOR]