Da Huang , Cheng Liu , Qin Yu , Hengrui Wang , Hongxi Chen , Dainan Zhang , Huaiwu Zhang
{"title":"Improved piezoelectric performance of PbNb2O6-based ceramics via K+ modification","authors":"Da Huang , Cheng Liu , Qin Yu , Hengrui Wang , Hongxi Chen , Dainan Zhang , Huaiwu Zhang","doi":"10.1016/j.jeurceramsoc.2025.117193","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, dense Pb<sub>(1-<em>x</em>)</sub>K<sub>2<em>x</em></sub>[Nb<sub>0.96</sub>Ta<sub>0.04</sub>]<sub>2</sub>O<sub>6</sub> (PK<em>x</em>NT, <em>x</em> = 0.05, 0.10, 0.15, 0.20) ceramics were prepared via the solid-state reaction method. It was discovered that the A-site vacancies filled by K<sup>+</sup> induced the conversion of the tetragonal tungsten bronze (TTB) structure from “unfilled” to “filled”. Two kinds of orthorhombic ferroelectric phases were indexed from the XRD profiles. The grain morphology was transformed from equiaxed to columnar and the diffuse phase transition (DPT) behavior was observed. Improved piezoelectric performance (<em>d</em><sub>33</sub> = 141 pC/N) and reduced dielectric loss (tanδ = 0.009) were obtained in the sample of PbK<sub>0.20</sub>NT. It is suggested that the strategy of K<sup>+</sup>/Ta<sup>5+</sup> co-substitution could greatly improve the piezoelectric properties of the PbNb<sub>2</sub>O<sub>6</sub>-based ceramic, which is promising for expanding its application scenarios.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 6","pages":"Article 117193"},"PeriodicalIF":6.2000,"publicationDate":"2025-06-01","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/S0955221925000135","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/8 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, dense Pb(1-x)K2x[Nb0.96Ta0.04]2O6 (PKxNT, x = 0.05, 0.10, 0.15, 0.20) ceramics were prepared via the solid-state reaction method. It was discovered that the A-site vacancies filled by K+ induced the conversion of the tetragonal tungsten bronze (TTB) structure from “unfilled” to “filled”. Two kinds of orthorhombic ferroelectric phases were indexed from the XRD profiles. The grain morphology was transformed from equiaxed to columnar and the diffuse phase transition (DPT) behavior was observed. Improved piezoelectric performance (d33 = 141 pC/N) and reduced dielectric loss (tanδ = 0.009) were obtained in the sample of PbK0.20NT. It is suggested that the strategy of K+/Ta5+ co-substitution could greatly improve the piezoelectric properties of the PbNb2O6-based ceramic, which is promising for expanding its application scenarios.
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.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
