Achieving ultra-low phase transition electric field and high dielectric constant in PbZrO3-based antiferroelectric ceramics by component modulation

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-03-01 DOI:10.1016/j.ceramint.2024.12.466

Hang Chen , A. Peláiz-Barranco , Huayang Zhu , Jianbin Tang , Tongqing Yang

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引用次数: 0

Abstract

Ceramic dielectric materials are widely used in the production of multilayer ceramic capacitors (MLCCs). Among these materials, antiferroelectric (AFE) materials play a crucial role in dielectric energy storage capacitors. However, achieving high energy storage density typically requires high voltages or large electric fields, which limits their use in civilian applications. To broaden the application of AFE materials at low electric field, such as integrated circuits and power electronics, it is essential to decrease the phase transition electric field of antiferroelectric to ferroelectric (E_A-F) and increase saturation polarization. In this study, (Pb_0.88Ba_0.09La_0.02)(Z_r0.6-xSn_0.4Ti_x)O₃(PBLZST) was synthesized using the traditional solid-state reaction method. By increasing the Ti⁴⁺ content, the E_A-F was successfully decreased while simultaneously both saturation polarization and dielectric constant were enhanced. Notably, the (Pb_0.88Ba_0.09La_0.02)(Zr_0.48Sn_0.4Ti_0.12)O₃ (T12) antiferroelectric ceramic achieved the lowest known E_A-F = 0.72 kV/mm, along with a high saturation polarization of 43.62 μC/cm². To better characterize the material's performance at low electric fields, a figure of merit u = P_max/E_b was designed to characterize the ability to store charge, and a larger value of u indicated the advantage of the material in achieving higher saturation polarization under its maximum tolerable electric field. The T12 antiferroelectric ceramic exhibited u = 0.58 under its breakdown strength, outperforming most reported AFE ceramics. Additionally, the T12 ceramic demonstrated a high dielectric constant of 4543 at room temperature, and its P-E hysteresis loop displayed excellent frequency stability (1–100 Hz) and fatigue resistance (>20,000 cycles) at an applied field of 1 kV/mm. These results indicate that (Pb_0.88Ba_0.09La_0.02)(Zr_0.48Sn_0.4Ti_0.12)O₃ antiferroelectric ceramics are promising candidates for civilian applications.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.