2011 Fiscal Year Final Research Report
Thermoelectric properties of natural superlattice crystals with low dimensional electric conduction layers
| Project/Area Number |
21360337
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Structural/Functional materials
|
|---|
| Research Institution | Kobe University (2010-2011)
Kyoto University (2009) |
|---|
Principal Investigator |
TANAKA Katsushi 神戸大学, 大学院・工学研究科, 教授 (30236575)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Keywords | 不定比化合物 / マグネリ相 / シアー構造 / 低次元電導体 / 熱電材料 |
|---|
| Research Abstract |
In this study, we demonstrate the efficiency as thermoelectric materials of off-stoichiometric oxide semiconductor in terms of electric and thermal conductivity. We succeed to obtain the value of dimensionless figure of merit to be 0. 3 in off-stoichiometric titanium oxide, that is quite large for ubiquitous oxides. The large value is due to a strong phonon scattering at crystallographic shear structure which is largely introduced by a thermal treatment.
|
