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- Title
Optimizing dielectric energy storage properties of BNT-based relaxor ferroelectric ceramics modified via Ba<sub>0.4</sub>Sr<sub>0.6</sub>TiO<sub>3</sub>.
- Authors
Zhu, Wen; Shen, Zong-Yang
- Abstract
Low-voltage driven ceramic capacitor applications call for relaxor ferroelectric ceramics with superior dielectric energy storage capabilities. Here, the (Bi0.5Na0.5)0.65(Ba0.3Sr0.7)0.35(Ti0.98Ce0.02)O3 + x wt% Ba0.4Sr0.6TiO3 (BNBSTC + xBST, x = 0, 2, 4, 6, 8, 10) ceramics were prepared to systematically investigate the effect of BST content on the phase structure, microscopic morphology and dielectric energy storage properties. A single perovskite structure with a dense and homogenous microstructure is presented in all BNBSTC + xBST ceramics. A recoverable energy storage density Wrec = 1.39 J/cm3 with efficiency η = 81.5% is achieved only under a low electric field of 94 kV/cm in the optimal composition of x = 6, accompanied by an enhanced dielectric temperature stability meeting the requirement of wider working window. In addition to good frequency, anti-fatigue and temperature stability, the BNBSTC + 6BST ceramics exhibit tremendous potential for designing low-voltage driven energy storage ceramic capacitors.
- Subjects
FERROELECTRIC ceramics; ENERGY storage; RELAXOR ferroelectrics; CERAMICS; CERAMIC capacitors; DIELECTRICS; ENERGY density; STRONTIUM; LEAD titanate
- Publication
Journal of Materials Science, 2024, Vol 59, Issue 7, p2998
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-024-09444-4