| Project/Area Number |
24760543
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Inorganic materials/Physical properties
|
|---|
| Research Institution | Nagoya University (2013-2014)
Tokyo Institute of Technology (2012) |
|---|
Principal Investigator |
TANIGUCHI Hiroki 名古屋大学, 理学(系)研究科(研究院), 准教授 (80422525)
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
|---|
| Keywords | 誘電体 / 構造相転移 / 酸素四面体 / セラミックス / 強誘電体 / 焦電体 / 酸化物 / ｾﾗﾐｯｸｽ / 圧電体 / シリケート |
|---|
| Outline of Final Research Achievements |
The present study has succeeded, through the elucidation of the mechanism of ferroelectricity in the layered-silicate-type new ferroelectric oxide Bi2SiO5, to develop the new materials-designing-principle for eco-friendly ferroelectric oxides with oxygen-tetrahedra, which is the most abundant form of oxides in the earth's crust. Based on fundamental knowledge obtained in the present study, the development of new functional oxides were conducted in stuffed-tridymite-type and stuffed-sodalite-type oxides. In these oxides, the improper-ferroelectricity, which does not show typical steep increase of permittivity around the ferroelectric phase transition temperature, was successfully controlled, to achieve, particularly in the stuffed-sodalite-type oxides, the excellent performance for pyroelectric IR-sensors that come up with that in the current material, PZT.
|
