Elastic properties of domains and domain walls in (K0.5Na0.5)NbO3 single crystal

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-05-27 DOI:10.1016/j.jeurceramsoc.2025.117566

Katarina Žiberna , Maja Koblar , Andraž Bradeško , Micka Bah , Franck Levassort , Goran Dražić , Hana Uršič , Andreja Benčan

{"title":"Elastic properties of domains and domain walls in (K0.5Na0.5)NbO3 single crystal","authors":"Katarina Žiberna , Maja Koblar , Andraž Bradeško , Micka Bah , Franck Levassort , Goran Dražić , Hana Uršič , Andreja Benčan","doi":"10.1016/j.jeurceramsoc.2025.117566","DOIUrl":null,"url":null,"abstract":"<div><div>The elastic properties of ferroelectric materials at the nanoscale are intricate, with domains and domain walls each having their own distinct elasticity – a property which can be exploited for tailoring materials performance. In this study, we report on the elastic response of the ferroelectric domain structure of a (K<sub>0.5</sub>Na<sub>0.5</sub>)NbO<sub>3</sub> single crystal, measured using an atomic force microscopy-based techniques. Before mapping the elastic properties, the domain structure was characterized using piezo-response force microscopy and transmission electron microscopy. The average measured reduced elastic modulus was ∼130 GPa. The 90° domain walls exhibit a 20 % difference in the reduced modulus, appearing elastically harder on one side of the domain and elastically softer on the other. In contrast, 60° domain walls showed no mechanical contrast with the neighboring domains. Anisotropy in elasticity was also observed between domains with different piezoelectric activity.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117566"},"PeriodicalIF":5.8000,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The European Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0955221925003863","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

The elastic properties of ferroelectric materials at the nanoscale are intricate, with domains and domain walls each having their own distinct elasticity – a property which can be exploited for tailoring materials performance. In this study, we report on the elastic response of the ferroelectric domain structure of a (K_0.5Na_0.5)NbO₃ single crystal, measured using an atomic force microscopy-based techniques. Before mapping the elastic properties, the domain structure was characterized using piezo-response force microscopy and transmission electron microscopy. The average measured reduced elastic modulus was ∼130 GPa. The 90° domain walls exhibit a 20 % difference in the reduced modulus, appearing elastically harder on one side of the domain and elastically softer on the other. In contrast, 60° domain walls showed no mechanical contrast with the neighboring domains. Anisotropy in elasticity was also observed between domains with different piezoelectric activity.

查看原文本刊更多论文

（K0.5Na0.5）NbO3单晶畴和畴壁的弹性特性

铁电材料在纳米尺度上的弹性特性是复杂的，每个畴和畴壁都有自己独特的弹性，这一特性可以用于定制材料的性能。在这项研究中，我们报告了使用基于原子力显微镜的技术测量（K0.5Na0.5）NbO3单晶的铁电畴结构的弹性响应。在绘制弹性性质之前，利用压电响应力显微镜和透射电子显微镜对畴结构进行了表征。测量的平均降低弹性模量为~ 130 GPa。90°畴壁的降低模量差异为20% %，在畴的一侧表现为弹性硬，在另一侧表现为弹性软。相反，60°畴壁与邻近畴没有力学上的对比。在不同的压电活性域之间也观察到弹性的各向异性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.