Performance Optimization of Pb0.97La0.03Sc0.45Ta0.45Ti0.1O3 Ceramics by Annealing Process

Zihan Su; Lingyu Wan; Fenglai Mo; Jiayu Li; Boxun Liu; Chuangjian Liang; Jinsong Xu; Devki N Talwar; Hang Li; Huilu Yao

doi:10.3390/ma16124479

Performance Optimization of Pb_0.97La_0.03Sc_0.45Ta_0.45Ti_0.1O₃ Ceramics by Annealing Process

Materials (Basel). 2023 Jun 20;16(12):4479. doi: 10.3390/ma16124479.

Authors

Zihan Su^{1

2}, Lingyu Wan^{1

2}, Fenglai Mo^{1

2}, Jiayu Li^{1

2}, Boxun Liu^{1

2}, Chuangjian Liang^{1

2}, Jinsong Xu^{1

2}, Devki N Talwar³, Hang Li^{1

2}, Huilu Yao^{1

2}

Affiliations

¹ Center on Nanoenergy Research, Guangxi Colleges and Universities Key Laboratory of Blue Energy and Systems Integration, Carbon Peak and Neutrality Science and Technology Development Institute, School of Physical Science & Technology, Guangxi University, Nanning 530004, China.
² State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Nanning 530004, China.
³ Department of Physics, University of North Florida, Jacksonville, FL 32224, USA.

Abstract

The annealing effects on Pb_0.97La_0.03Sc_0.45Ta_0.45Ti_0.1O₃ (PLSTT) ceramics prepared by the solid-state reaction method are systemically investigated using experimental and theoretical techniques. Comprehensive studies are performed on the PLSTT samples by varying annealing time (AT) from t (=0, 10, 20, 30, 40, 50 and 60) h. The properties involving ferroelectric polarization (FP), electrocaloric (EC) effect, energy harvesting performance (EHP) and energy storage performance (ESP) are reported, compared and contrasted. All these features are seen to gradually improve with the increase in AT, and they all reach the climaxed-shaped values and then decrease by further increasing the AT. For t = 40 h, the maximum FP (23.2 µC/cm²) is attained at an electric field of 50 kV/cm, while the high EHP effects (0.297 J/cm³) and positive EC are achieved (for ΔT~0.92 K and ΔS~0.92 J/(K·kg)) at 45 kV/cm. The EHP value of the PLSTT ceramics increased by 21.7% while the polarization value was enhanced by 33.3%. At t = 30 h, the ceramics have attained the best ESP value of 0.468 J/cm³ with an energy loss of 0.05 J/cm³. We strongly believe that the AT plays a crucial role in the optimization of different traits of the PLSTT ceramics.

Keywords: ferroelectric ceramic; performance optimization; the annealing process.

Abstract

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