Structure, electrical properties and temperature stability of PIN–PZN–PT piezoelectric ceramics with morphotropic phase boundary compositions  

作　　者：Tingting Wang Longhai Yang Kexin Song Zhenrong Li Zhuo Xu 

机构地区：[1]Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric Research School of Electronic and Information Engineering Xi’an Jiaotong University Xi’an 710049,P.R.China

出　　处：《Journal of Advanced Dielectrics》2019年第1期59-65,共7页先进电介质学报（英文）

基　　金：This work was financially supported by the International Science and Technology Cooperation Program of China under Grant No.2014DFR51240,the“111”Project(No.B14040);the National Basic Research Program of China(973 Program)under Grant No.2015CB654602;the National Natural Science Foundation of China under Grant Nos.51761145024 and 61627812;The SEM work was done at International Center for Dielectric Research(ICDR),Xi0 an Jiaotong University,Xi0 an,China。

摘　　要：A series of Pb(In_(1/2)Nb_(1/2))O_(3)–Pb(Zn_(1/3)Nb_(2/3))O_(3)–PbTiO_(3)(PIN–PZN–PT)ternary piezoelectric ceramics with compositions at the morphotropic phase boundary(MPB)were prepared.The phase structure,microstructure,electrical properties and temperature stability of PIN–PZN–PT ceramics were investigated systematically.The structural analysis indicated that an MPB phase consisting of rhombohedral and tetragonal phases was formed in all ceramics.For the selected compositions,dielectric measurements demonstrated that the Curie temperature TC changed from 237℃ to 295℃ and showed a strong trend of compositional depen-dence.All the samples showed good piezoelectic properties.Particularly,the 0.35PIN–0.40PZN–0.25PT sample has the optimum piezoelectric properties,the piezoelectric coefficient d_(33) is 589 pC/N,the electromechanical coupling factors kp and kt are 59%and 49%,respectively.Compared with PZN–PT and PMN–PT ferroelectric crystals,the superior limit of usage temperature of PIN–PZN–PT ceramics was achieved around 230℃ by thermal depoling method.These results make PIN–PZN–PT ceramics a promising material to meet the practical demands of higher temperature and larger electric field operating ranges.

关 键 词：PIN-PZN-PT piezoelectric ceramics temperature stability performance-composition maps 

分 类 号：TQ1[化学工程]