| Structure and Mixed Electronic-ionic Conducting Properties of La0.6Sr0.4Co1-yFeyO3（y= 0-1.0） Ceramics Made by a Citrate Method |
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| 引用本文： | 黄端平 徐庆 ZHANG Feng CHEN Wen LIU Hanxing ZHOU Jian.Structure and Mixed Electronic-ionic Conducting Properties of La0.6Sr0.4Co1-yFeyO3（y= 0-1.0） Ceramics Made by a Citrate Method[J].武汉理工大学学报(材料科学英文版),2008,23(1):80-84. |
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| 作者姓名： | 黄端平 徐庆 ZHANG Feng CHEN Wen LIU Hanxing ZHOU Jian |
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| 作者单位： | School of Materials Science and Engineering Wuhan University of Technology，School of Materials Science and Engineering，Wuhan University of Technology，Wuhan 430070，China，Wuhan 430070，China |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划，the Special Research Found for the Doctoral Program of High Education，the Foundation of Innovative Research Team of Hubei Province |
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| 摘 要： | La0.6Sr0.4Co1-yFeyO3（y= 0-1.0） powders were synthesized by a citrate method, and the structure and mixed electronic-ionic conducting properties of the resulting ceramics were investigated. The synthesized La0.6Sr0.4Co1-yFeyO3 powders have a pure perovskite structure and consist of uniform and fine particles. A perovskite struciure with rhombohedral symmetry was certified for the La0.6Sr0.4Co1-yFeyO3 ceramics. The increase of Co/Fe ratio significantly promoted the grain growth and microstructural densification. The La0.6Sr0.4Co1-yFeyO3 compositions with relatively higher Co/Fe ratio exhibit superior mixed conducting properties. The electronic structure and microstructure of the ceramics are responsible for the variation of the mixed conducting properties with Co/Fe ratio.
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| 关 键 词： | 氧化物陶瓷 柠檬酸盐法 化学分析 微观结构 电子-离子导电性能 |
| 文章编号： | 10.1007/s11595-006-1080-3 |
| 收稿时间： | 2006-03-16 |
| 修稿时间： | 2007-10-18 |
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