| Project/Area Number |
22760087
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Materials/Mechanics of materials
|
|---|
| Research Institution | Osaka Institute of Technology |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
|---|
| Keywords | 材料設計 / プロセス・物性・評価 / 第一原理計算 / 状態図 / 圧電材料 / バイオマテリアル / 複合ペロブスカイト / スパッタ薄膜 / マルチスケール解析 |
|---|
| Research Abstract |
It is necessary for new medical electro-mechanical devices to develop implantable piezoelectric materials with biocompatibility. The purpose of this study is to improve material properties and to search the optimum fabrication condition of novel lead-free piezoelectric materials. Complex crystal structure of novel perovskite compounds, which can exhibit a giant piezoelectricity on morphotropic phase boundary, was designed through first-principles calculations. Substitution elements were specified with consideration of biocompatibility and structural phase transition process was predicted from phonon properties. Additionally a practical numerical simulation scheme based on Landau’s phenomenological theory was developed to support fabrication of piezoelectric materials. Formulation of energy and coefficient identification were carried out through first-principles calculations and phase diagram of novel materials was provided to find some optimum fabrication conditions of morphotropic phase boundary.
|
