Ta、Nb掺杂Bi_(3.15)Nd_(0.85)Ti_3O_(12)陶瓷铁电介电性能研究  

Study on Dielectric Properties of Ta/Nb Doping Bi_(3.15)Nd_(0.85)Ti_3O_(12) Ferroelectric Ceramics

作　　者：王宁章[1] 容世龙 刘世丰 

机构地区：[1]广西大学计算机与电子信息学院,广西南宁530004 [2]广西大学材料科学与工程学院,广西南宁530004

出　　处：《压电与声光》2016年第2期271-274,共4页Piezoelectrics & Acoustooptics

基　　金：广西科学研究与技术开发计划基金资助项目(桂科攻0330003-6)

摘　　要：采用传统固相烧结工艺制备了掺杂Ta、Nb的Bi3.15Nd0.85Ti3O12材料,构成Bi3.15Nd0.85Ti3-2x TaxNbxO12(x=0,0.02,0.04,0.06)铁电陶瓷。研究了Ta、Nb掺杂对Bi3.15Nd0.85Ti3O12陶瓷晶体结构和铁电性能的影响。结果表明,Ta、Nb掺杂未改变Bi3.15Nd0.85Ti3O12陶瓷的钙钛矿晶体结构,剩余极化值提高,具有较好电滞回线(Pr-Ec)。在电压为45 V、测试频率为0.1kHz下,Bi3.15Nd0.85Ti3-2xTaxNbxO12铁电陶瓷的剩余极化强度(2Pr)及矫顽场强(2Ec)可分别达到25.07μC/cm2和31.1kV/cm,电容-电压(C-V)曲线呈标准的蝴蝶形。Bi3.15Nd0.85 Ti3O12 ceramics with Ta/Nb doping were prepared to construct Bi3.15 Nd0.85 Ti3-2x TaxNbxO12（x= 0,0.02,0.04,0.06）ferroelectric ceramics by using the conventional solid phase sintering process.The influence of Ta/Nb doping on the crystal structure and electric properties of the Bi3.15Nd0.85Ti3O12 ceramics.Results showed that the Ta/Nb doping could not change the perovskite crystal structure of Bi3.15Nd0.85Ti3O12 ceramic,the residual polarization value was increased significantly,and the electric hysteresis loop（Pr-Ec）was good.The remaining polarization（2Pr）and coercive field strength（2Ec）of Bi3.15Nd0.85Ti3-2xTaxNbxO12 are 25.07μC/cm2 and 31.1kV/cm respectively at the voltage of 45 Vand test frequency of 0.1kHz and the C-Vcurve presented the standard butterfly.

关 键 词：固相烧结 铁电陶瓷 钙钛矿结构 电滞回线 剩余极化 电容-电压(C-V)曲线 

分 类 号：TN381[电子电信—物理电子学]