BaCo_(0.02)~IICo_(0.04)~IIIBi_(0.94)O_3/BaSb_(0.04)Sn_(0.96)O_3复合热敏厚膜电学性能研究  

Study on Electrical Properties of BaCo_(0.02)~IICo_(0.04)~IIIBi_(0.94)O_3/BaSb_(0.04)Sn_(0.96)O_3 Composite Thermosensitive Thick-film

作　　者：成钧[1] 袁昌来[1] 骆颖[2] 杨云[1] 刘心宇[1] 苏学奋 Cheng, Jun[1]; Yuan, Chang-Lai[1]; Luo, Ying[2]; Yang, Yun[1]; Liu, Xin-Yu[1]; Su, Xue-Fen[1]

机构地区：[1]桂林电子科技大学材料科学与工程学院,桂林541004 [2]桂林空军学院,桂林541004

出　　处：《人工晶体学报》2014年第2期394-398,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金青年基金(51102055)

摘　　要：采用丝网印刷工艺制备了BaCoII0.02CoIII0.04Bi0.94O3/BaSb0.04Sn0.96O3复合热敏厚膜。借助X射线衍射仪、扫描电子显微镜和阻温测试仪对复合热敏厚膜的微结构、电学性能进行了表征分析。结果表明复合热敏厚膜主相仍为钙钛矿结构的BaCoII0.02CoIII0.04Bi0.94O3和BaSb0.04Sn0.96O3,厚膜表面随BaCoII0.02CoIII0.04Bi0.94O3含量增加趋于致密均匀。复合热敏厚膜的烧结温度、室温电阻率(ρ25)、热敏常数(β25/85)和活化能(E a)随BaCoII0.02CoIII0.04Bi0.94O3含量的增加呈现下降趋势,其烧结温度、ρ25、β25/85和E a分别处于870~1000℃、2.5 kΩ·cm^2.35 MΩ·cm、2764~4030 K和0.238~0.348 eV范围内。BaCo^Ⅱ0.02CO^Ⅲ0.04Bio.94O3/BaSb0.04Sn0.96O3b0. 04 3no. 96 O3 composite thick films were prepared by screen-pnntmg technology. The microstructures and electrical properties of the thick films were characterized by X-ray diffractometry （XRD）, scanning electron microscopy （SEM） and a digital muhimeter. The results indicate that the composite thermistor films are still composed of perovskite-typeBaCoo.BaCo^Ⅱ0.02CO^Ⅲ0.04Bio.94O3/BaSb0.04Sn0.96O3 phases. The denser and more even film surface was observed as the BaCo^Ⅱ0.02CO^Ⅲ0.04Bio.94O3/BaSb0.04Sn0.96O3 content increasing. The sintering temperatures, room-temperature resistivity （P2s）, thermistor BaCo^Ⅱ0.02CO^Ⅲ0.04Bio.94O3/BaSb0.04Sn0.94O3 and activation energy （Ea） of the eomposite films, decreased as the BaCo^Ⅱ0.02CO^Ⅲ0.04Bio.94O3/BaSb0.04Sn0.96O3 content increasing, are in the range of 870-1000 ℃, 2.5 kΩ · era-2.35 MΩ · cm, 2764-4030 K and 0. 238-0. 348 eV, resoectivelv.

关 键 词：BaCo^Ⅱ0 02CO^Ⅲ0 04Bio 94O3 BaSb0 04Sn0 96O3 热敏厚膜 电学性能 

分 类 号：O484.1[理学—固体物理]