2023 Fiscal Year Research-status Report
| Project/Area Number |
22KF0381
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| Allocation Type | Multi-year Fund |
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
任 暁兵 国立研究開発法人物質・材料研究機構, 電子・光機能材料研究センター, 上席研究員 (50292529)
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| Co-Investigator(Kenkyū-buntansha) |
KHATUA DIPAK 国立研究開発法人物質・材料研究機構, 電子・光機能材料研究センター, 外国人特別研究員
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| Project Period (FY) |
2023-03-08 – 2025-03-31
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| Keywords | 圧電材料 / 強誘電体 / PZT / 三重臨界点 |
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| Outline of Annual Research Achievements |
We employed solid state synthesis process for piezoceramic fabrication. A number of characterizations were performed to find the structure property co-relation. We employed XRD investigations for structural and microstructural characterizations. Dielectric, piezoelectric and DSC measurements were performed in order to characterize the performance of the piezoelectric material. We also demonstrate the electrical energy generation performance of the fabricated piezoelectric device from random mechanical vibration.
Our investigation has led to the extraordinary discovery namely, ultrahigh piezoelectricity (d33 > 3000 pC/N) in the polycrystalline ceramic. This result is very impactful in terms of high property-based applications and fundamental understanding.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
Our goal of the current project was the development of conducting ferroelectrics for enhanced mechanical energy harvesting. However, development of conducting ferroelectrics, led to the substantial reduction in the piezoelectric co-efficient which is an important parameter for the energy harvesting.
Instead of that, alternatively we plan to develop ultrahigh piezoelectric co-efficient (d33) piezoelectric and then add conducting fillers such as CNT, graphene etc to make a conducting ferroelectric for better energy harvesting.
Accordingly, we investigated a Pb based piezoelectric ceramic and obtained high (d33 > 3000 pC/N) in it.
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| Strategy for Future Research Activity |
Our investigation has led to the extraordinary discovery namely, ultrahigh piezoelectricity (d33 > 3000 pC/N) in the polycrystalline ceramic. This result is very impactful in terms of high property-based applications and fundamental understanding.
We are about to published a research paper in a reputed scientific journal in the following months.
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| Causes of Carryover |
研究計画の見直しが発生したため。
それに伴い、従来計画しなかった品目の消耗品を計上する必要となる。
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