Role of the third composition and its A-site cation off-centering mechanism in ternary BiFeO3‒BaTiO3-based piezoelectric ceramics

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2025-03-13 DOI:10.1016/j.scriptamat.2025.116637

Hyunwook Nam , Sangwook Kim , Ichiro Fujii , Motoki Aruga , Shintaro Ueno , Yoshihiro Kuroiwa , Satoshi Wada

{"title":"Role of the third composition and its A-site cation off-centering mechanism in ternary BiFeO3‒BaTiO3-based piezoelectric ceramics","authors":"Hyunwook Nam , Sangwook Kim , Ichiro Fujii , Motoki Aruga , Shintaro Ueno , Yoshihiro Kuroiwa , Satoshi Wada","doi":"10.1016/j.scriptamat.2025.116637","DOIUrl":null,"url":null,"abstract":"<div><div>Ternary BiFeO<sub>3</sub>‒BaTiO<sub>3</sub> (BFBT)-based ceramics often exhibit a higher piezoelectricity compared to binary BFBT ceramics. However, the origin of the enhanced piezoelectricity in ternary ceramics remains unclear. In this study, we investigated the role of the third composition by examining the pseudo-cubic symmetry of Bi(Mg<sub>0.5</sub>Ti<sub>0.5</sub>)O<sub>3</sub> (BMT)-modified BFBT piezoelectric ceramics using high-energy synchrotron radiation X-ray diffraction and the Rietveld method. Our experimental results validate the critical influence of Bi ion off-centering displacement, as the largest Bi ion off-centering displacement at a specific third composition demonstrates the highest piezoelectric properties. The displacement of Bi ions varies with the Bi-O covalent bond length and repulsive interactions between the off-centered Bi and B-site cations. This study highlights the importance of the ionic radii of the B-site cations in the third composition for high-performance BFBT-based piezoelectric ceramics.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"262 ","pages":"Article 116637"},"PeriodicalIF":5.3000,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scripta Materialia","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359646225001009","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Ternary BiFeO₃‒BaTiO₃ (BFBT)-based ceramics often exhibit a higher piezoelectricity compared to binary BFBT ceramics. However, the origin of the enhanced piezoelectricity in ternary ceramics remains unclear. In this study, we investigated the role of the third composition by examining the pseudo-cubic symmetry of Bi(Mg_0.5Ti_0.5)O₃ (BMT)-modified BFBT piezoelectric ceramics using high-energy synchrotron radiation X-ray diffraction and the Rietveld method. Our experimental results validate the critical influence of Bi ion off-centering displacement, as the largest Bi ion off-centering displacement at a specific third composition demonstrates the highest piezoelectric properties. The displacement of Bi ions varies with the Bi-O covalent bond length and repulsive interactions between the off-centered Bi and B-site cations. This study highlights the importance of the ionic radii of the B-site cations in the third composition for high-performance BFBT-based piezoelectric ceramics.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.