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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
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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.
作者 成钧 袁昌来 骆颖 杨云 刘心宇 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 桂林电子科技大学材料科学与工程学院 桂林空军学院
出处 《人工晶体学报》 EI CAS CSCD 北大核心 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)
关键词 BaCo^Ⅱ0 02CO^Ⅲ0 04Bio 94O3 BaSb0 04Sn0 96O3 热敏厚膜 电学性能 BaCo^Ⅱ0.02CO^Ⅲ0.04Bio．94O3／BaSb0．04Sn0．96O3 BaSbo.04Sno.9603 thermosensitive thick-film electrical property
分类号 O484.1 [理学—固体物理]
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参考文献13

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人工晶体学报
2014年 第2期

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