2011 Fiscal Year Final Research Report
Origin of the Large Oxygen Permeability in Praseodymium Nickel Oxides
| Project/Area Number |
21360318
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
YASHIMA Masatomo 東京工業大学, 大学院・理工学研究科, 教授 (00239740)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIHARA Tatsumi 九州大学, 工学研究院, 教授 (80184555)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 結晶構造解析 / 酸素透過能 / 混合伝導体 / 電子密度解析 / 中性子回折 |
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| Research Abstract |
Origin of the large oxygen permeability in the doped praseodymium nickel oxide(Pr_<0. 9> La_<0. 1>)_2(Ni_<0. 74> Cu_<0. 21> Ga_<0. 05>) O_<4+δ> has been investigated at atomic and electronic levels. Using the high-temperature neutron diffractometry, we found that the oxide ions in(Pr_<0. 9> La_<0. 1>)_2(Ni_<0. 74> Cu_<0. 21> Ga_<0. 05>) O_<4+δ> diffuse two dimensionally through the interstitial site, which is responsible for the high oxide-ion diffusivity.
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Research Products
(6 results)
