About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Dielectric Materials and Electronic Devices
|
| Presentation Title |
Structural and microstructural properties in (5A)BO3 high-entropy ferroelectric ceramics – Effect of the Ba2+ concentration |
| Author(s) |
Karine Felix Santos de Jesus, Marco Antonio Rodriguez Martinez, Ruyan Guo, Amar S. Bhalla, John C. Mantilla Ochoa, Jose de los Santos Guerra |
| On-Site Speaker (Planned) |
Jose de los Santos Guerra |
| Abstract Scope |
The structural and microstructural evolution have been investigated in the BaxNa0.20Bi0.20Sr0.20Ca0.40–xTiO3 high-entropy ferroelectric system, considering the effect of the barium concentration on the crystal (micro)structure. The samples have been synthesized via the solid-state reaction sintering method. The structural properties, investigated from X-ray diffraction and Raman spectroscopy confirmed the formation of a single-phase perovskite structure for all the analyzed compositions, revealing a subtle lattice distortion with the increase in the Ba2+ content. The microstructural characteristics, obtained from the scanning electron microscopy, showed dense microstructures with uniform grains distribution, while the average grain-size revealed interesting variation with the Ba2+ concentration. The obtained results offer pathways to tailor the functional properties of high-entropy ferroelectrics, contributing to the understanding of compositional effects in complex oxide systems for potential piezoelectric and dielectric applications. ACKNOWLEDGMENTS: The authors thank to CNPq (309494/2022-2 and 408662/2023-9), FAPEMIG (APQ-02875-18) and CAPES (Finance Code 001) for the financial support. |