Effect of Sm2O3 on the microstructure and piezoelectric properties of 0.28PIN-0.32PZN-0.1PZ-0.3 PT ceramics

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-09-01 DOI:10.1016/j.ceramint.2025.06.210

Xiaoyu Xu , Xiaoying Feng , Xin Xu , Liyang Zhou , Hui Wang , Bin Yan , Jie Xu , Feng Gao

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引用次数: 0

Abstract

In this work, Sm₂O₃-doped 0.28PIN-0.32PZN-0.1PZ-0.3PT ceramics were synthesized by solid-state method. We systematically examined the influence of Sm₂O₃ concentration on the microstructure and electrical properties of the resulting samples. X-ray diffraction analysis indicated that all compositions retained the perovskite structure, with a minor pyrochlore phase emerging at higher Sm₂O₃ levels. Increasing Sm₂O₃ content promoted a phase transition from rhombohedral to tetragonal symmetry, causing samples to depart from the morphotropic phase boundary (MPB). The enhanced tetragonal fraction led to greater lattice distortion, hindering domain switching and thereby reducing piezoelectric performance. Transmission electron microscopy (TEM) and piezoresponse force microscopy (PFM) characterization elucidated the mechanism by which an optimal Sm₂O₃ doping (0.5 mol %) improved piezoelectricity: at this concentration, the piezoelectric coefficient (d₃₃) reached 650 pC/N, the electromechanical coupling factor (k_p) was 0.54, and the Curie temperature (T_c) increased to 267 °C. These findings provide insight into extending the operational temperature range of piezoelectric ceramics for practical applications.

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Sm2O3对0.28PIN-0.32PZN-0.1PZ-0.3 PT陶瓷微观结构和压电性能的影响

本文采用固相法合成了掺杂sm2o3的0.28PIN-0.32PZN-0.1PZ-0.3PT陶瓷。我们系统地研究了Sm2O3浓度对所得样品的微观结构和电性能的影响。x射线衍射分析表明，所有成分都保留了钙钛矿结构，在较高的Sm2O3水平下出现了少量的焦绿石相。Sm2O3含量的增加促进了样品的相从菱形向四方对称转变，使样品偏离了嗜形相边界（MPB）。增强的四方分数导致更大的晶格畸变，阻碍了畴切换，从而降低了压电性能。透射电子显微镜（TEM）和压电响应力显微镜（PFM）表征揭示了最佳Sm2O3掺杂浓度（0.5 mol %）改善压电性的机理：在该浓度下，压电系数（d33）达到650 pC/N，机电耦合系数（kp）为0.54，居里温度（Tc）提高到267℃。这些发现为扩大压电陶瓷的实际应用工作温度范围提供了见解。

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

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.