Composition design of PMN-PH-PT piezoelectric ceramics for high-temperature actuator applications

被引：7

作者：

Zhu, Rongfeng ^{[1
,2
]}

Fang, Bijun ^{[1
]}

Zhang, Shuai ^{[1
]}

Lu, Xiaolong ^{[1
]}

Ding, Jianning ^{[1
,3
]}

机构：

[1] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolat Sci & E, Jiangsu Prov Cultivat Base State Key Lab Photovol, Sch Mat Sci & Engn,Natl Expt Demonstrat Ctr Mat S, Changzhou 213164, Jiangsu, Peoples R China

[2] Chinese Acad Sci, Key Lab Inorgan Funct Mat & Device, Shanghai Inst Ceram, Shanghai 201800, Peoples R China

[3] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Jiangsu, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2020年 / 7卷 / 04期

基金：

中国国家自然科学基金;

关键词：

PMN-PH-PT; high-Curie temperature; columbite precursor method; electrical properties; electric field induced strain; FERROELECTRIC PHASE-TRANSITION; ELECTRICAL-PROPERTIES; PERFORMANCE;

D O I：

10.1088/2053-1591/ab7969

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-Curie temperature (T-m) piezoelectric ceramics 0.15Pb(Mg1/3Nb2/3)O-3-xPbHfO(3)-(0.85-x)PbTiO3 (0.15PMN-xPH-(0.85-x)PT, x = 0.36, 0.38, 0.39, 0.40, 0.42, 0.15PMN-PH-PT) were synthesized by the solid-state reaction method via the columbite precursor route. The synthesized 0.15PMN-PH-PT ceramics exhibit pure perovskite structure with compositions locate near the morphotropic phase boundary (MPB), where the rhombohedral phase and the tetragonal phase coexist. The sintered samples present high densification, in which the 0.15Pb(Mg1/3Nb2/3)O-3-0.38PbHfO(3)-0.47PbTiO(3) (0.15PMN-0.38PH-0.47PT) ceramics present the highest relative density, being 97.76%. The dielectric performance-temperature curves measured at different frequencies, the Curie-Weiss law fitting and the quadratic law fitting indicate that the ferroelectric phase transition from ferroelectric phase to paraelectric phase occurred at T-0 in the 0.15PMN-PH-PT ceramics is driven by the displacive phase transition, and the 0.15PMN-PH-PT ceramics belong to normal ferroelectrics with diffused phase transition characteristic. Due to the MPB effect and high relative density, the 0.15PMN-0.38PH-0.47PT ceramics exhibit the best integral electrical properties, excellent thermal stability and large electric field induced strain, which present prospect promising for actuator applications under elevated environmental temperatures.

引用

页数：10

共 30 条

[1] High temperature piezoelectric BiScO3-PbTiO3 synthesized by mechanochemical methods [J].