Synthesis and study of structural and electrophysical characteristics of piezoceramic section (1- x)(0.8PbMg1/3Nb2/3O3·0.2BiScO3)·x (0.8PbTiO3·0.2 BiScO3) of the ternary system BiScO3-PbTiO3-PbMg1/3Nb2/3O3


Nogai A. Sysoev M. Bush A. Nogai A.
1 February 2025World Scientific

Journal of Advanced Dielectrics
2025#15Issue 1

X-ray diffraction and dielectric studies were performed on synthesized ceramic samples of the section (1-x) (0.8PbMg1/3Nb2/3O3·0.2BiScO3)· x(0.8PbTiO3·0.2BiScO3) with x=0-1 of the ternary BiScO3-PbTiO3-PbMg1/3Nb2/3O3 (BS-PT-PMN) system, including the temperature dependence of thermally stimulated depolarization currents (TSDC). It was found that the samples are solid solutions with a perovskite structure, which have cubic symmetry in the range of x = 0-0.587 and tetragonal symmetry in the range of x = 0.680-1. In the intermediate composition range of x = 0.587-0.680 (morphotropic region - MR), the samples consist of a mixture of solid solutions of different symmetries. Data on the change in dielectric properties and TSDC(T) dependencies of solid solutions with a change in their composition were obtained. It was found that samples of compositions x =0-0.625 and 0.6875-1 exhibit relaxor-ferroelectric and conventional ferroelectric properties, respectively, while samples of compositions x = 0.625-0.6875 combine ferroelectric and relaxor-ferroelectric properties.

dielectric properties , ferroelectrics , morphotropic phase boundary , Piezoceramics , relaxor ferroelectrics , structure

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Department of Radio Engineering, Electronics and Telecommunications, S. Seifullin Kazakh Agrotechnical Research University, Zhenis Ave., 62, Astana, 010011, Kazakhstan
Department of Nanoelectronics at the Institute of Advanced, Technologies and Industrial Programming of MIREA, Russian Technological University, Vernadsky Ave., 78, Moscow, 119454, Russian Federation

Department of Radio Engineering
Department of Nanoelectronics at the Institute of Advanced

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