Quantification of nonstoichiometry in ceramic grain boundary
| Project/Area Number |
20760449
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | The University of Tokyo |
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Principal Investigator |
MIZOGUCHI Teruyasu The University of Tokyo, 生産技術研究所, 准教授 (70422334)
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| Project Period (FY) |
2008 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 結晶界面 / ノンストイキオメトリー / 欠陥 / 電子顕微鏡 / 第一原理計算 / 原子.電子構造 / セラミックス / 表面・界面物性 / 格子欠陥 |
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| Research Abstract |
Atomic and electronic structures of crystal interfaces are usually different from that in a single crystal. Thus, the polycrystalline materials can often bring about different properties from that of the single crystals. In this study, atomic structure, electronic structure, and nonstoichiometry in the vicinity of the interface were investigated by combining electron microscopy, spectroscopy, and theoretical calculation. Through this project, the site-by-site defect formation behaviors and relationships between the distortion, chemical bonding, and defect formation at the interface were revealed. I believe that the way for the materials design by controlling the interface nonstoichiometry is paved by this project.
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Report
(3 results)
Research Products
(76 results)
