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 |
Section | 一般 |
Research Field |
Inorganic materials/Physical properties
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Research Institution | Nagoya Institute of Technology |
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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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
Keywords | 酸素透過性セラミックス / 混合導電性酸化物 / ヤーン・テラー歪み |
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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Report
(5 results)
Research Products
(40 results)
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[Journal Article] Preface2017
Author(s)
K. Kamada, K. Takeyama, E. Yoshida, N. Soh
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Journal Title
Journal of the Ceramic Society of Japan
Volume: 125
Issue: 4
Pages: P4-1-P4-4
DOI
NAID
ISSN
1348-6535, 1882-0743
Related Report
Peer Reviewed / Acknowledgement Compliant
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