Abstract
In this study, Al2TiO5 –based multifunctional ceramics were prepared using the spark plasma sintering method within a temperature range of 1573–1773 K. The influence of the sintering temperature on the microstructure, phase composition, and electrochemical and optical properties of the Al2O3-TiO2-Al2TiO5 ceramics was evaluated. The results showed that ceramic composites sintered at T = 1773 K possessed the lowest porosity and optical reflectance (5%) in the visible, UV and infrared wavelength ranges. They were characterized by an average crystallite size of approximately 35 nm and the bandgap of 2.2 eV. Considerable changes in the electronic band structure and density of states inside the bandgap lead to enhanced charge carrier separation and reduced charge transfer resistance (RCT = -1.7).
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Hajihashemi, M., Shamanian, M. & Ashrafizadeh, F. Oxygen vacancy-induced Al2TiO5 –based multifunctional ceramic composites: Electrochemical and optical properties. J Electroceram 48, 169–182 (2022). https://doi.org/10.1007/s10832-022-00284-9
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DOI: https://doi.org/10.1007/s10832-022-00284-9