Enhanced Energy Storage Properties of the Relaxor and Antiferroelectric Crossover Ceramic Enabled by a High Entropy Design
In this work, we introduce a high entropy effect in designing a relaxor ferroelectric (RFE)-antiferroelectric (AFE) crossover ceramic by incorporating a high entropy relaxor-like oxide (Pb<sub>0.25</sub>Ba<sub>0.25</sub>Sr<sub>0.25</sub>Ca<sub>0.25</sub>)TiO<sub>3</sub> with antiferroelectric NaNbO<sub>3</sub>. The results show that the relaxor ferroelectricity of the system is enhanced with increasing NaNbO<sub>3</sub>, and when the new composition reaches the highest configurational entropy, stable energy storage properties can be achieved. This is enabled by a high breakdown strength due to the small grain size and stable slim ferroelectric hysteresis loop with high efficiency due to entropy-stabilized short-range ordered polar nanoregions (PNRs). These findings showcase the potential of this strategy for exploiting new compositions of high-performance electrostatic capacitors.
Authors
- Wei Xiong (ORCID: https://orcid.org/0000-0002-2447-2825)
- Xuefan Zhou
- Dou Zhang (ORCID: https://orcid.org/0000-0001-8555-2784)
- Yinghao Li (ORCID: https://orcid.org/0000-0001-9584-8159)
- Hang Luo (ORCID: https://orcid.org/0000-0003-3351-4238)
- Ru Guo (ORCID: https://orcid.org/0009-0006-1272-9538)
Institutions
- Central South University (CN)
- Chinese University of Hong Kong (HK)
Publication Details
- Journal
- Materials
- Published
- 2025-04-24
- DOI
- https://doi.org/10.3390/ma18091937
- Citations
- 2
- Primary Topic
- Ferroelectric and Piezoelectric Materials
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Hainan Province