Ceramic materials based on compositions of modified lanthanum manganite and bismuth ferrite

Composite materials based on ceramics with improved electrophysical properties, such as modified lanthanum manganite and bismuth ferrite, are studied. The technology of lanthanum manganite synthesis has been optimized and modified with calcium oxide in order to change the antiferromagnetic lattice of LaMnO₃, which caused magnetic and structural transformations. Bismuth ferrite modified with La³⁺ ions has been synthesized. The compositions were composed of modified ceramic phases. X-ray phase analysis of samples of the initial ceramic phases and their compositions was carried out on a Bruker D8 ADVANCE diffractometer (Germany). To identify the crystalline phases, we used the international Join Committee on Powder Diffusion Standards 2003 file and the MATCH software from Crystal Impact. Ceramic technology was used for synthesis. Sintering was carried out at a temperature of 950–1050 ° C with an exposure time of 2 hours at a maximum temperature. The physicochemical and electrical properties, the structure of the obtained material are investigated, and the mechanisms of polarization are established. The synthesized materials can be used to manufacture integrated actuating elements of devices and automation devices.

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