2009 Fiscal Year Final Research Report
Quantification of nonstoichiometry in ceramic grain boundary
| Project/Area Number |
20760449
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Inorganic materials/Physical properties
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
MIZOGUCHI Teruyasu The University of Tokyo, 生産技術研究所, 准教授 (70422334)
|
|---|
| Project Period (FY) |
2008 – 2009
|
| 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 |
|---|
| 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.
|
