2016 Fiscal Year Final Research Report
Simultaneous in-situ measurement of oxygen defect concentration and thermal conductivity of metal oxide
| Project/Area Number |
15K13888
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Thermal engineering
|
|---|
| Research Institution | Kyushu University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2015-04-01 – 2017-03-31
|
| Keywords | 金属薄膜 / サーモリフレクタンス / 熱伝導率 |
|---|
| Outline of Final Research Achievements |
To improve an analytical model of thermoreflectance method, the cross-plane thermal transport, generation, and propagation of coherent acoustic-phonon wave in thin Pt film-glass substrate have been comprehensively studied by applying the picosecond laser pump-probe method with different configurations. Significantly different time-dependent reflectance signals have been obtained in different configurations and an effect superposition model is proposed to account for cross plane thermal transport inducing ipsi- and contralateral temperature change in thin Pt film, propagation of coherent acoustic-phonon wave in thin Pt film and in glass substrate. The corresponding theoretical predictions match well with the experimental data. In addition, a metal oxide thin film was prepared by PLD method (Pulsed Laser Deposition), and its thermal conductivity was measured. Furthermore, the effects of high temperature atmosphere (600 degree celsius) on a molybdenum thin film were examined.
|
| Free Research Field |
熱工学
|
