Enhanced piezoelectric properties in low-temperature sintered Pb(Zr,Ti)O_(3)-based ceramics via Yb_(2)O_(3) doping  

作　　者：Wanfeng Zhuang Weiling Wang Yaxia Luo Hong Liu Jianguo Zhu 

机构地区：[1]College of Materials Science and Engineering Sichuan University,Chengdu 610065 P.R.China

出　　处：《Journal of Advanced Dielectrics》2024年第4期30-37,共8页先进电介质学报（英文）

基　　金：financially supported by the Key Research and Development Program of the Sichuan Provincial Science and Technology Plan(No.2023DYF0173);the Fundamental Research Funds for the Central Universities(Nos.20826041E4280 and 20826041F4235).

摘　　要：Pb(Mg_(0.5)W_(0.5))O_(3)–Pb(Ni_(1/3)Nb_(2/3))O_(3)–Pb(Zr_(0.5)Ti_(0.5))O_(3)(PNN–PMW–PZT)piezoceramics were sintered at a low temperature of 900℃by the mixed metal oxide powder solid-state reaction route.CaCO_(3) and Li_(2)CO_(3) as sintering aids and Yb_(2)O_(3) as a dopant were added into the PNN–PMW–PZT ceramic system for low-temperature sintering and enhancement of electrical properties,respectively.The effects of different Yb_(2)O_(3) doping amounts on the microstructure,dielectric,piezoelectric and ferroelectric properties of the samples were systematically investigated.The piezoceramics doped with 0.1 mol%Yb_(2)O_(3) have optimal electrical properties(d_(33)=563 pC/N,k_(p)=0.66,ε_(r)=2728(1 kHz),tanδ=0.0176(1 kHz),and T_(C)=301℃).While the piezoceramics doped with 0.3 mol% Yb_(2)O_(3) have optimal energy conversion properties:the piezoelectric voltage coefficient g_(33)=26.7×10^(-3)Vm/N and the effective piezoelectric energy conversion coefficient d_(33)×g_(33)=14366×10^(-15)m^(2)/N.

关 键 词：Piezoelectric properties ferroelectric properties low-temperature sintering PZT energy conversion coefficient 

分 类 号：TM28[一般工业技术—材料科学与工程]