Аннотация:Single phase ceramic samples of new compositions (1−x)(K0.5Na0.5)NbO3–xSrZrO3 (x = 0–0.15) modified with a LiF additive are prepared via solid state reactions and their crystal structure, microstructure, and dielectric and nonlinear optical properties are studied. The formation of a perovskite-structured phase with pseudocubic unit cell in modified samples is proved. Ferroelectric phase transitions are confirmed by means of dielectric spectroscopy. A drop in the temperature of the phase transition and a weakening of nonlinear optical properties are revealed as the concentration of SrZrO3 rises.
