Excellent piezoelectric constant and thermal stability in BiScO_(3)-PbTiO_(3) piezoelectric ceramics via domain engineering
作者机构：Shanghai Institute of CeramicsKey Laboratory of Inorganic Functional Materials and DevicesChinese Academy of Sciences1295 Dingxi RoadShanghai200050People's Republic of China University of Chinese Academy of SciencesShijingshan DistrictBeijing100049People's Republic of China State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of SciencesShanghai200050People's Republic of China
出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)
年 卷 期：2022年第8卷第2期
页 面：319-326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] 0703[理学-化学] 0702[理学-物理学]
基 金：This work was supported by the National Natural Science Foundation of China,China(Grant No.51932010) by the Natural Science Foundation of Shanghai,China(Grant No.19ZR1464600)
主 题：MPB Phase structure Piezoelectric constant Thermal stability
摘 要：The application of piezoelectric ceramics at high temperature is limited because they can t have both high piezoelectric coefficient and high Curie ***,BiScO_(3)-PbTiO_(3)-based piezoelectric ceramics possessing high Curie temperature and piezoelectric properties simultaneously have drawn increasing attention due to their potential applications at high ***,we reported a novel compositional design of(1-x)[0.36BiScO_(3)-0.64PbTiO_(3)]-xBi(Sn_(1/3)Nb_(2/3))O_(3)(abbreviated as BS-PT-xBSN).BS-PT-xBSN ceramic samples were synthesized by conventional solid state reaction *** to the ternary phase diagram of BS-PT-xBSN ceramics brought up in this work,the morphotropic phase boundaries(MPB)were confirmed,which is located in the vicinity of x¼*** canbe identified that the x=0.02 sample near MPB has the optimal electric performance which are giant piezoelectric coefficient(d_(33)-450 pC/N,higher 18%than undoped samples)and high Curie temperature(T_(c)-368℃)as well as large remant polarization(P_(r)46.6 m C/cm^(2)).In addition,the variation of P_(r) is 3% in the temperature range of 30-180℃ and the depolarization temperature of x=0.02 ceramics is about 280℃.Structural analysis such as in-situ PFM and TEM confirms that giant piezoelectricity and depolarization temperature are attributed to the appearance of nano-domain and complexity of domains as well as the stable domain *** work not only reveal the high potential of BS-PT-xBSN for high-temperature piezo-electric applications but also open up a feasible approach to design new high-temperature piezoelectric ceramics.
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