RESEARCH OF MULTIFUNCTIONAL CERAMIC MATERIALS FOR THEIR APPLICATION

A new challenge is obtaining and researching ceramic multifunctional materials containing phases with various properties, as well as Aurivillius phases, which determine their application. They show potential for use in electrochemical applications and ferroelectric and piezoelectric devices, sensors, and non-volatile memories. Presented are our studies of volumetric nonmonophasic ceramics from the RE-Ba-Cu-O (ReBCO, RE = rare-earth; Y, Dy) and Bi-Pb-Sr-Ca-Cu-O (B(Pb) SCCO) systems that are superconductors, obtained via solid phase synthesis. A bulk ceramic composite Y123/BaCuO2 was synthesized with starting stoichiometry of 1:3:4(Y:Ba:Cu) via a one-step procedure. It has superconducting and magnetic properties at low temperatures. DyBCO bulk ceramic with a nano-Fe3O4 additive was synthesized and characterized to identify the phase and elemental composition, the microstructure, and the superconducting transition temperature. The Aurivillius phases were synthesized via solid-phase synthesis and a melt-quench method. B(Pb)SCCO ceramics (2223, 2212, and 2201), with conductive properties, have been used as an addition to the active mass of a Zn electrode. The method of mixing the materials was also investigated. Their behavior in an alkaline environment and positive influence on the properties and longevity of the nickel-zinc battery has been studied. Part of the obtained ceramic systems was patented.