Dependence of the Formation of the Five-Layer Aurivillius Phase on the Chemical Prehistory of the Initial Composition

Materials with a layered perovskite-like structure of the Aurivillius phase type are important for technology fields such as magnetoelectronics and photocatalysis. Features of phase formation during the synthesis of nano- and macrocrystalline materials based on Bi 6 Fe 2 Ti 3 O 18 with the five-laye...

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Bibliographic Details
Published in:Refractories and industrial ceramics 2023-07, Vol.64 (2), p.126-130
Main Authors: Lomanova, N. A., Tomkovich, M. V., Ugolkov, V. L.
Format: Article
Language:English
Subjects:
Bismuth compounds
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Curie temperature
Dilatometry
Glass
Materials Science
Natural Materials
Paleontology
Perovskite
Perovskite structure
Perovskites
Powders
Sintering
Sintering (powder metallurgy)
Solid phases
Synthesis
Thermal expansion
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Summary:Materials with a layered perovskite-like structure of the Aurivillius phase type are important for technology fields such as magnetoelectronics and photocatalysis. Features of phase formation during the synthesis of nano- and macrocrystalline materials based on Bi 6 Fe 2 Ti 3 O 18 with the five-layer Aurivillius phase structure are described. Samples were characterized by powder XRD, DSC/TG, dilatometry, and SEM/EDX. The temperatures of the beginning of formation, the Curie point, the beginning of decomposition and activation of sintering of the obtained materials, and the value of the coefficient of linear thermal expansion were determined. The technological possibility of controlling the dispersion of the obtained materials by changing the synthesis conditions is shown.
ISSN:1083-4877
1573-9139
DOI:10.1007/s11148-023-00814-0