2013 Fiscal Year Final Research Report
Development of in situ soft X-ray absorption spectroscoy for analysis of ceramics materials in high temperature devices
| Project/Area Number |
24656374
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Inorganic materials/Physical properties
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
AMEZAWA Koji 東北大学, 多元物質科学研究所, 教授 (90263136)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
YASHIRO Keiji 東北大学, 大学院環境科学研究科, 准教授 (20323107)
HASHIMOTO Shin-ichi 東北大学, 大学院工学研究科, 准教授 (60598473)
|
|---|
| Project Period (FY) |
2012-04-01 – 2014-03-31
|
| Keywords | 軟X線吸収分光 / その場測定 / 機能性酸化物 / 電子構造 |
|---|
| Research Abstract |
In this work, in situ soft X-ray absorption spectroscopic technique, which can be used to analyze electronic structures of functionalized oxides under controlled atmosphere, temperature and polarization, was established. By applying the differential evacuation system for ambient pressure soft x-ray spectrocopy togehter with the specific sample holder developed in this work, in situ soft X-ray absroption spectroscopic measurements were made possible at high temperature while controlling atmosphere under polarization. Through measurements with LaCoO3 and La2NiO4 as model oxides, it was found that absorption spectra could be clearly obtained below 873 K of temperature and 0.01 bar of oxygen partial pressure.The established in situ analytical technique can be a powerful and versatile tool for the direct observation of electronic structures of functionalized oxides used for high temperature devices.
|
