Circumventing the Piezoelectric Performance Bottleneck in Bi0.5Na0.5TiO3–Based Ceramics by Designing Multilayer Piezoelectric Ceramics with Local Phase Transition

IF 7.1 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Chemistry of Materials Pub Date : 2026-10-06 DOI:10.1021/acs.chemmater.6c01394

Jun Chen,Yiping Wang,Huihui Liu,Ying Yang

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引用次数: 0

Abstract

Abstract Bi0.5Na0.5TiO3-based piezoceramics are attractive for their excellent electrical properties, but their industrial application is constrained by the difficulty in simultaneously achieving a high piezoelectric coefficient (d33 > 300 pC/N), a high ferroelectric-relaxor phase transition temperature (TF–R > 200 °C), and a low d33 variation (<20%). Herein, the aforementioned performance bottleneck is circumvented by designing the multilayer piezoelectric ceramics (MLPC) with a local phase transition from ferroelectric to relaxor state. The local phase transition is achieved by grinding sintered 0.93Bi0.5Na0.5TiO3–0.07BaTiO3 ceramic into a powder and then incorporating it into the 0.85Bi0.5Na0.5TiO3–0.15BaTiO3 ceramic. By this strategy, a five-layer piezoelectric ceramic possesses a high apparent d33 of 480 pC/N and a high TF–R of 220 °C. Furthermore, the d33 variation in the MLPC is less than 17% over the temperature range of 30–170 °C. The excellent temperature stability is associated with an appropriate reduction in remanent polarization, which is primarily attributed to the local temperature-sensitive rhombohedral and tetragonal distortions. These distortions then trigger a local phase transition from the ferroelectric R3c and P4mm phases to the relaxor P4bm phase. This work offers an alternative paradigm for designing high-performance MLPC.

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局部相变多层压电陶瓷设计突破bi0.5 na0.5 tio3基陶瓷的压电性能瓶颈

摘要bi0.5 na0.5 tio3基压电陶瓷因其优异的电学性能而备受关注，但其工业应用受到难以同时实现高压电系数（d33 > 300 pC/N）、高铁电弛豫相变温度（tf & r > 200°C）和低d33变化（<20%）的限制。本文通过设计具有从铁电态到弛豫态局部相变的多层压电陶瓷（MLPC）来绕过上述性能瓶颈。将烧结好的0.93Bi0.5Na0.5TiO3-0.07BaTiO3陶瓷研磨成粉末，再将其掺入0.85Bi0.5Na0.5TiO3-0.15BaTiO3陶瓷中，实现局部相变。通过这种策略，五层压电陶瓷具有480 pC/N的高表观d33和220°C的高TF-R。此外，在30-170℃的温度范围内，MLPC的d33变化小于17%。优异的温度稳定性与残余极化的适当降低有关，这主要归因于局部温度敏感的菱形和四边形畸变。然后，这些畸变触发从铁电R3c和P4mm相到弛豫剂P4bm相的局部相变。这项工作为设计高性能MLPC提供了另一种范例。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemistry of Materials 工程技术-材料科学：综合

CiteScore

14.10

自引率

5.80%

发文量

929

审稿时长

1.5 months

期刊介绍： The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.