2017 Fiscal Year Final Research Report
Effects of Jahn-Teller ions in mixed conductive oxides on oxygen permeation properties
| Project/Area Number |
26420680
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
Kagomiya Isao 名古屋工業大学, 工学(系)研究科(研究院), 准教授 (40318811)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKAMURA Shin 帝京大学, 理工学部, 准教授 (80217851)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | 酸素透過性セラミックス |
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| Outline of Final Research Achievements |
The purpose of this study is to evaluate the effect of Jahn-Teller ions on oxygen permeation properties in the Fe-based mixed conductive perovskites. We investigated oxygen partial pressure dependence of total conductivity and chemical diffusion coefficient Dchem by using an electrical conductivity relaxation method in La1-xSrxFeO3. The PO2 dependence of total conductivity showed that the dominating charge carrier was Fe4+ under the high PO2 range. In the high PO2 range, the oxygen vacancy diffusibility showed higher than that in the low PO2 range. It suggests that the local distortions around the Jahn-Teller ion (Fe4+) promote the oxygen vacancy diffusion.
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| Free Research Field |
無機物性
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