Temperature-insensitive KNN-based ceramics by elevating O-T phase transition temperature and crystal texture

作     者：Shuo Gao Peng Li Jiawei Qu Mingze Sun Jigong Hao Peng Fu Zhongbin Pan Jiwei Zhai Wei Li Shuo Gao;Peng Li;Jiawei Qu;Mingze Sun;Jigong Hao;Peng Fu;Zhongbin Pan;Jiwei Zhai;Wei Li

作者机构：School of Materials Science and EngineeringLiaocheng UniversityLiaocheng252059China School of Materials Science and Chemical EngineeringNingbo UniversityNingbo315211China School of Materials Science and EngineeringTongji UniversityShanghai201804China 

出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)

年 卷 期：2023年第9卷第2期

页      面：261-268页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(No.52102132) Natural Science Foundation of Shandong Province of China(Nos.ZR2020QE043,ZR2020ME031 and ZR2020ME033) Innovation Team of Higher Educational Science and Technology Program of Shandong Province(No.2019KJA025) Research Foundation for the Doctoral Program of Liaocheng University(No.318051932) 

主　　题：Textured ceramics Ba modification Piezoelectric properties Temperature stability 

摘      要：The inferior temperature stability of piezoelectric response is the main drawback of KNN-based ***,the Ba-doped 0.97(K0.48Na0.52)(Nb0.96Sb0.04)O3-0.03Bax(Bi0.5Ag0.5)1-xZrO3(abbreviated as KNNSBxBAZ)textured ceramics were prepared by the template grain growth(TGG)*** comprehensive properties(d33¼(406±15)pC/N,TC=274℃,strain is 0.17%)were achieved in KNNSBxBAZ textured ceramics with x=***,its piezoelectric and strain properties also show superior temperature stability(d33 maintained within±20%change in awide temperature range from 25℃to 200℃and strain variation was less than 5%in the temperature range from room temperature to 165℃).The high O-T phase transition temperature(TO-T is 110℃)induced by incorporating Ba ions accounts for the enhanced temperature stability of piezoelectric *** addition,the crystal texture always maintains the contribution of piezoelectric anisotropy to the piezoelectric properties during elevated temperature,which significantly improved the temperature stability of piezoelectric *** work provides an effective strategy for simultaneously achieving high piezoelectric response and excellent temperature stability in KNN-based ceramics.