典型文献
Tailoring depolarization temperature by phase transition causing properties evolution in Bi0.5(Na1-xKx)0.5TiO3 ceramics
文献摘要：
(Bi0.5Na0.5)Ti03-based materials have attracted widespread attention due to large electro-strain,large remnant polarization(Pr)and high Curie temperature(Tc),but the existence of inherent depolarization temperature(Td)limits the temperature stability and application temperature range.In this work,we find that K/Na ratio can regulate Td(from 90℃to 246℃)of the ceramics,which confirms that the increase of K substitution can effectively improve the temperature stability of the material.The phase structure and electrical properties of Bi0.5(Na1-xKx)0.5Ti03(BNKTx)ceramics can be well modulated by changing K/Na.In addition,BNKTx system exhibits excellent piezoelectric response at morphotropic phase bound-ary(MPB)of 20％BKT content(d33=180 pC/N),where rhombohedral(R3c)phase and tetragonal(P4bm)phase coexist in MPB.With K further substitution,BNKTx ceramics transform into tetragonal phase,and the domain size grows due to the structural transition from short-range-correlated P4bm to long-range-correlated P4mm.The deferment of Td is also tightly related to the increase of P4mm/P4bm ratio.This work can provide an effective way to tailor depolarization temperature and electrical properties of BNT-based ceramics.
文献关键词：
中图分类号：
作者姓名：
Diyan Yang;Jihui Han;Jie Yin;Haoyue Xue;Jiagang Wu
作者机构：
Department of Materials Science,Sichuan University,Chengdu,610065,China
文献出处：
引用格式：
[1]Diyan Yang;Jihui Han;Jie Yin;Haoyue Xue;Jiagang Wu-.Tailoring depolarization temperature by phase transition causing properties evolution in Bi0.5(Na1-xKx)0.5TiO3 ceramics)[J].材料科学技术（英文版）,2022(19):111-119
A类：
xKx,Ti03,5Ti03,BNKTx,morphotropic,P4bm,P4mm,deferment
B类：
Tailoring,depolarization,temperature,by,phase,transition,causing,properties,evolution,Bi0,Na1,5TiO3,ceramics,5Na0,materials,have,attracted,widespread,attention,due,large,electro,strain,remnant,Pr,high,Curie,Tc,but,existence,inherent,Td,limits,stability,application,range,In,this,work,find,that,ratio,can,regulate,from,which,confirms,increase,substitution,effectively,improve,structure,electrical,be,well,modulated,changing,addition,system,exhibits,excellent,piezoelectric,response,bound,ary,MPB,BKT,content,d33,pC,where,rhombohedral,R3c,tetragonal,coexist,With,further,transform,into,domain,size,grows,structural,short,correlated,long,also,tightly,This,provide,way,tailor,BNT
AB值：
0.49553
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
