摘要
为了提高SnO2基NTC热敏材料的电学性能稳定性,采用共沉淀法合成了Sb掺杂SnO2材料,[Sn1-xSbxO2+δ(x=0.02,0.04,0.05和0.07)]。利用XRD对其进行了相分析,利用电阻–温度特性测试仪研究其电阻温度特性。结果表明:500℃煅烧后获得了具有高纯四方相、晶粒尺寸小于10nm的Sb掺杂SnO2材料;x(Sb)为2%、4%、5%和7%的热敏电阻的材料常数B分别为6616,6207,5730和2197K。
In order to improve the stability of electrical property of SnO2-based NTC thermistor materials, Sb-doped tin oxide materials Sn1-xSbxO2＋δ （x=0.02, 0.04, 0.05 and 0.07） were synthesized using the coprecipitation method. The phase composition of the prepared materials was analyzed by X-my diffraction and the temperature dependence of resistance was characterized using a characteristic tester. The results show that high purity Sb-doped SnO2 nanopowders with tetragonal phase were obtained through calcining at 500 ℃ and the grain size of obtained powders is less than 10 nm. The thermistors prepared by sintering Sn1-xSbxO2＋δpowders clearly show the negative-temperature- coefficient characteristic, and their material constants are 6 616, 6 207, 5 730 and 2 197 K respectively, when x（Sb） is 2%, 4%, 5% and 7%.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2009年第6期56-59,共4页
Electronic Components And Materials
基金
教育部留学回国人员科研启动基金资助项目(No.2006331
20071108)
高校博士点专项科研基金资助项目(No.20070533119)
湖南省科技计划博士后专项基金资助项目(No.2008RS4015)
