BMT对SrTiO_3基高压陶瓷电容器储能的影响  

Influence of BMT on the energy storage of SrTiO_3-based high voltage ceramic capacitors

作　　者：陈方元[1,2] 王华博[1,2] 陶静[1,2] 汪小红[1,2] 吕文中[1,2] CHEN Fang-yuan WANG hua-bo TAO Jing WANG Xiao-hong LV Wen-zhong(School of Optical and Electronic Information, Huazhong University of Science and Technology ,Wuhan 430074, China Key Lab of Functional Materials for Electronic Information （B）, MOE, Wuhan 430074, China)

机构地区：[1]华中科技大学光学与电子信息学院,湖北武汉430074 [2]电子信息功能材料教育部重点实验室,湖北武汉430074

出　　处：《内蒙古科技大学学报》2016年第4期360-364,共5页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金资助项目(51302093);中央高校基本科研业务费专项基金资助项目(2015MS017)

摘　　要：采用固相反应法制备出了(1-x)(Sr_(0.84)Pb_(0.16))O_3-xBi(Mg_(1/2)Ti_(1/2))O_3陶瓷((1-x)SPT-x BMT,x=0~0.08).研究了Bi(Mg_(1/2)Ti_(1/2))O_3对SPT陶瓷结构、介电性能及储能特性的影响.结果表明BMT与SPT可形成固溶体,BMT的引入能增强材料的弛豫特性.当添加Bi(Mg_(1/2)Ti_(1/2))O_3的6%时,在1 270℃的温度下烧结获得了具有优异的性能:ε_r=1 980,tanδ=0.00325,E_b=16 k V/mm,储能密度J=0.544 J/cm^3(E=11 k V/mm时)的高压陶瓷电容器储能材料.（1-x）（Sr_（0.84）Pb_（0.16）） O_3-x Bi（ Mg_（1/2）Ti_（1/2）） O_3（（ 1-x） SPT-x BMT,x = 0 ~ 0.08） ceramics were prepared by the conventional mixed oxide method.The effects of Bi（ Mg_（1/2）Ti_（1/2）） O_3（ BMT） on the structure,dielectric properties and energy storage characteristic of（ Sr,Pb） TiO_3 ceramics were studied.The results indicated that BMT and SPT formed a solid solution with perovskite structure.With the addition of BMT,a change from a normal ferroelectric behavior to a relaxor-like behavior was observed.The 0.94（ Sr_（0.84）Pb_（0.16））O_3-0.06Bi（ Mg_（1/2）Ti_（1/2）） O_3 ceramics sintered at 1 270 ℃ exhibited attractive properties of ε_r= 1 980,tanδ = 0.003 25,E_b= 16 k V/mm,J = 0.544 J/ cm^3（ at E = 11 k V/mm）,which is suitable for the application of high voltage capacitors.

关 键 词：介电常数 耐压强度 储能密度 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]