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Synthesis and humidity sensitive properties of nanocrystalline Ba1−xSrxTiO3 thick films |
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| Authors: | Xi Li Fabin Qiu Kui Guo Bo Zou Jianmin Gu Jing Wang Baokun Xu |
| Affiliation: | a Department of Chemistry, Jilin University, Changchun 130023, China b Department of Electronic Engineering, Jilin University, Changchun 130023, China |
| Abstract: | Nanocrystalline Ba1?xSrxTiO3 (x=0, 0.2, 0.4, 0.6, 0.8 and 1.0) precursors were synthesized using the stearic acid gel method. After the precursors had been calcined at 600–950°C for 0.5–1 h, nanocrystalline powders with the cubic perovskite structure were obtained and these were made into thick films. The powder samples were characterized by differential thermal analysis, X-ray diffraction and transmission electron microscopy, and the thick film samples were characterized by scanning electron microscopy and X-ray diffraction. The humidity-sensitive properties of the nanocrystalline Ba1?xSrxTiO3 thick films were investigated. The results show that these nanocrystalline thick films possess higher humidity sensitivity and lower resistance than those of conventional materials. |
| Keywords: | Ceramic materials Nanostructured materials Thick films Differential thermal analysis X ray diffraction analysis Transmission electron microscopy Scanning electron microscopy Thermal effects Perovskite Synthesis (chemical) Fatty acids Gels Calcination Humidity sensitivity Stearic acid gel method |
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