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题名: Phase transitions in Sr1+xCo0.8Fe0.2O3-delta oxides
作者: He, Yufeng1, 2;  Zhu, Xuefeng1;  Guo, Zhenfang1;  Yang, Weishen1
关键词: Oxygen desorption ;  Crystal structure ;  X-ray techniques ;  Membranes
刊名: MATERIALS LETTERS
发表日期: 2010-07-31
DOI: 10.1016/j.matlet.2010.04.058
卷: 64, 期:14, 页:1618-1621
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Multidisciplinary ;  Physics, Applied
研究领域[WOS]: Materials Science ;  Physics
英文摘要: The phase transitions that take place in Sr1+xCo0.8Fe0.2O3-delta (-0.2 <= x <= 0.1) oxides are reported here. Thermogravimetric analysis (TGA) showed that the oxides with -0.2 <= x <= 0 were prone to undergo oxygen-vacancy disorder-order phase transitions, while others with x=0.05, 0.1 had more stable crystal structures during oxygen-desorption processes in nitrogen. These results were further confirmed by high-temperature in-situ X-ray techniques. The changes in activation energies of three typical oxides, Sr1+xCo0.8Fe0.2O3-delta (x= -02, 0, 0.1), used as oxygen-permeable membranes were investigated. The phase transitions in Sr1+xCo0.8Fe0.2O3-delta (x = -0.2,0) have also been detected in differential scanning calorimetry (DSC) profiles. (C) 2010 Elsevier B.V. All rights reserved.
关键词[WOS]: OXYGEN ;  PEROVSKITES ;  SEPARATION ;  BEHAVIOR
语种: 英语
WOS记录号: WOS:000279529300021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141630
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Dalian 116023, Peoples R China

Recommended Citation:
He, Yufeng,Zhu, Xuefeng,Guo, Zhenfang,et al. Phase transitions in Sr1+xCo0.8Fe0.2O3-delta oxides[J]. MATERIALS LETTERS,2010,64(14):1618-1621.
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