典型文献
Ultrahigh strain in textured BCZT-based lead-free ceramics with CuO sintering agent
文献摘要：
Textured BaTiO3(BT)-based lead-free ceramics have gained significant attention due to their high piezo-electric coefficient(d)and very large field induced strain(S).However,costly nano-size raw materials,excessively high sintering temperature and low Curie temperature(Tc)hinder their device applications.In this work,highly[001]c-oriented(Ba0.95Ca0.05)(Zr0.04Ti0.96)O3 ceramics with x mol％CuO(x=0.25,0.5,1.0,2.5)denoted as BCZT-x were synthesized by templated grain growth using micro-sized raw powders.The introduction of CuO sintering agent lowered the sintering temperature by 125℃to 1450℃,and the BCZT-1.0 achieved a high texture degree of～99％.In addition,the CuO-based liquid phases eliminated boundaries between BT templates and BCZT matrix powders.Such liquid-phase sintering reduced sinter-ing stresses,decreased the average grain size of BCZT-1.0 from 16 μm down to 13 μm,and increased the dielectric dispersion coefficient γ to 1.63.The almost smoothed out To-T anomaly in the tempera-ture dependence of dielectric permittivity and comparably high Tc(＞102℃)lead to better temperature stability.The narrower grain orientation distribution with full width at half maximum(FWHM)of～5.9° and smaller domains with the size of 0.1-0.5μm in width and 3-8 μm in length were obtained,a high field induced maximum strain Smax of 0.38％and low Hs of 5.2％have been achieved in BCZT-1.0 textured ceramics together with a high and homogeneous piezoelectric stress coefficient d33～780 pC/N and very large d33*～2950 pm/V.
文献关键词：
中图分类号：
作者姓名：
Yingchun Liu;Hongjun Zhang;Wenming Shi;Qian Wang;Guicheng jiang;Bin Yang;Wenwu Cao;Jiubin Tan
作者机构：
Functional Materials and Acoustooptic Instruments Institute,School of Instrumentation Science and Engineering,Harbin Institute of Technology,Harbin 150080,China;Department of Mathematics and Materials Research Institute,The Pennsylvania State University,University Park,PA 16802,USA;Ultra-precision Optical&Electronic Instrument Engineering Center,Harbin Institute of Technology,Harbin 150001,China
文献出处：
引用格式：
[1]Yingchun Liu;Hongjun Zhang;Wenming Shi;Qian Wang;Guicheng jiang;Bin Yang;Wenwu Cao;Jiubin Tan-.Ultrahigh strain in textured BCZT-based lead-free ceramics with CuO sintering agent)[J].材料科学技术（英文版）,2022(22):207-214
A类：
95Ca0,04Ti0
B类：
Ultrahigh,strain,textured,BCZT,lead,free,ceramics,CuO,sintering,agent,Textured,BaTiO3,BT,have,gained,significant,attention,due,their,coefficient,very,large,field,induced,However,costly,nano,raw,materials,excessively,temperature,Curie,Tc,hinder,device,applications,In,this,work,highly,oriented,Ba0,Zr0,denoted,synthesized,by,templated,grain,growth,using,micro,powders,introduction,lowered,achieved,degree,addition,liquid,phases,eliminated,boundaries,between,templates,matrix,Such,reduced,stresses,decreased,average,from,down,increased,dielectric,dispersion,almost,smoothed,out,To,anomaly,dependence,permittivity,comparably,better,stability,narrower,orientation,distribution,full,width,half,maximum,FWHM,smaller,domains,length,obtained,Smax,Hs,been,together,homogeneous,piezoelectric,d33,pC,pm
AB值：
0.526727
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