2013 Fiscal Year Final Research Report
Study on crystalline growth of phase transition oxides with various oxidation states and their electric transport characteristics
| Project/Area Number |
23560013
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Applied materials science/Crystal engineering
|
|---|
| Research Institution | Tokai University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Keywords | 相転移酸化物 / バナジウム酸化物 / 絶縁体金属転移 / マグネリ相 / 結晶成長 / 薄膜堆積 / 相共存 / アニール効果 |
|---|
| Research Abstract |
In this project, we studied vanadium dioxide (VO2) with insulator-metal transition (IMT) and related oxide phases which possess different oxidation states such as VnO2n-1 and VnO2n+1. By using mass flow controller which enabled fine control of oxygen partial pressure, we successfully fabricated crystalline V2O3 films on sapphire and silicon substrates. Obtained V2O3 films transformed to VnO2n-1 and VnO2n+1 phases by post-annealing in oxygen atmosphere with adequate temperature and time. Through the study, electrical transport characteristics of VnO2n-1 and VnO2n+1 were partially clarified and the significance of phase coexistence in vanadium oxide thin films was shown.
|
