Sb_2O_3掺杂量对BaBiO_3基陶瓷电性能的影响  

Effect of Sb_2O_3-doped amount on the electrical properties of BaBiO_3 based ceramics

作　　者：石雨[1] 刘心宇[1,2] 马家峰[1] 

机构地区：[1]桂林电子科技大学信息材料科学与工程系,广西桂林541004 [2]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《电子元件与材料》2009年第10期31-33,共3页Electronic Components And Materials

基　　金：广西自然科学基金资助项目(No.桂科字0447092);桂林电子科技大学基金资助项目(No.E20694)

摘　　要：为改善BaBiO3基陶瓷的NTC特性,选择Sb2O3为掺杂剂,以固相法合成了BaBiO3基陶瓷。研究了Sb2O3掺杂量对该陶瓷的物相、显微结构及电性能的影响。结果表明:Sb2O3掺杂BaBiO3基陶瓷的B25/85值和室温电阻率ρ25均随着n(Sb2O3)的增加呈现先减小后增大的趋势;当n(BaBiO3):n(Sb2O3)=1000:3时,获得了具有较好NTC特性的样品,其室温电阻率ρ25为416Ω.cm,B25/85值为2378K。The Sb2O3-doped BaBiO3 based ceramics with NTC characteristics were prepared by conventional solid-state reaction method. The effects of Sb2O3-doped amount on the phase composition, microstructure and electrical properties of the ceramics were investigated by XRD, SEM and p-t characteristic tester. The results show that with increase of the Sb2O3-doped amount, the P25 and B25/85 value of the ceramics first decrease, and then increase again. When n（BaBiO3） ： n（Sb2O3）=1000： 3, the ceramic sample with better NTC characteristics is obtained and itsp25 is 416 Ω·cm and B25/85 value is 2 378 K.

关 键 词：BaBiO3 NTC特性 Sb2O3掺杂量 电性能 

分 类 号：TN37[电子电信—物理电子学]