Achieving ultrahigh electromechanical properties with high TC in PNN-PZT textured ceramics  

作　　者：Q.Wang L.Bian K.Li Y.C.Liu Y.L.Yang B.Yang W.W.Cao 

机构地区：[1]School of Instrumentation Science and Engineering,Harbin Institute of Technology,Harbin 150080,China [2]Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices,Huizhou University,Huizhou 516001,China [3]Conversion and Storage,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150080,China

出　　处：《Journal of Materials Science & Technology》2024年第8期258-265,共8页材料科学技术（英文版）

基　　金：supported in part by the Natural Science Foun-dation of Heilongjiang Province(No.LH2022E048);Postdoctoral Science Foundation of Heilongjiang Province(No.LBH-Z22138);China National Postdoctoral Program for Innovative Talents(No.BX20490103).

摘　　要：<001>textured Pb(Ni_(1/3)Nb_(2/3))O_(3)-PbZrO_(3)-PbTiO_(3)(PNN-PZT)ceramics were prepared by templated grain growth(TGG)technique using 0.36PNN-x PZ-(0.64-x)PT(x=0.23,0.25 and 0.27)powder matrix.Optimum template content was derived to achieve the best electromechanical properties of textured ceramics.The piezoelectric coefficient d33=1165 pC/N,Curie temperature T_(C)=197℃,longitudinal mode electrome-chanical coupling factor k33=0.86 and a very large effective piezoelectric strain coefficient d_(33)^(*)=2041 pm/V were simultaneously achieved at the morphotropic phase boundary(MPB)composition(x=0.25)with 3 vol.%BaTiO_(3)(BT)templates.Domain structures of textured ceramics were analyzed in detail to reveal the origin of these high piezoelectric and electromechanical properties.

关 键 词：Pb(Ni_(1/3)Nb_(2/3))O_(3)-PbZrO_(3)-PbTiO_(3)(PNN-PZT) CERAMICS MPB composition Texture engineering Electromechanical properties Domain structure 

分 类 号：TG148[一般工业技术—材料科学与工程]