Insights into pressure-driven depolarization in PLZST-based antiferroelectric ceramics

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS Journal of The European Ceramic Society Pub Date : 2024-10-02 DOI:10.1016/j.jeurceramsoc.2024.116954

Anil Adukkadan, Deepak Sharma , Gudeta Jafo Muleta , Rajeev Ranjan

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Abstract

Materials showing field-driven antiferroelectric to ferroelectric transformation are interesting for the design of pyroelectric, high strain actuator and high-power dielectric energy storage and discharge devices. The stability of the antiferroelectric and ferroelectric states at room temperature can be chemically tuned by La and Ti co-modification of the antiferroelectric system Pb(Zr_1-ySn_y)O₃. Here, we have chosen a composition Pb_0.982La_0.012(Zr_0.60Sn_0.30Ti_0.10)O₃ (PLZST) at the threshold of the antiferroelectric-ferroelectric instability at room temperature and investigated the effect of electric field, temperature and pressure on the stability of the structural-polar states. We show that electric poling transforms irreversibly the antiferroelectric state into a ferroelectric state. Application of hydrostatic pressure ∼100 MPa on the field-stabilized ferroelectric phase, however, restores the antiferroelectric state and depolarizes the system.

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透视基于 PLZST 的反铁电陶瓷中的压力驱动去极化现象

显示场驱动的反铁电到铁电转变的材料对于设计热释电、高应变致动器和大功率介电储能和放电设备很有意义。反铁电体系 Pb（Zr1-ySny）O3 在室温下的反铁电态和铁电态的稳定性可以通过 La 和 Ti 共修饰进行化学调整。在这里，我们选择了室温下处于反铁电-铁电不稳定临界点的 Pb0.982La0.012(Zr0.60Sn0.30Ti0.10)O3（PLZST）成分，并研究了电场、温度和压力对结构极性态稳定性的影响。我们的研究表明，电极化将反铁电态不可逆地转变为铁电态。然而，对场稳定的铁电相施加 ∼100 兆帕的静水压力会恢复反铁电态并使系统去极化。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.