| Project/Area Number |
23760643
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
NAGATA Hajime 東京理科大学, 理工学部, 准教授 (70339117)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 非鉛圧電セラミックス / チタン酸ビスマスカリウム / 積層セラミックアクチュエータ / 粒子配向セラミックス / 圧電特性 / 非鉛強誘電体セラミックス / ペロブスカイト化合物 / 粒子配向技術 |
|---|
| Research Abstract |
Lead-based piezoelectric ceramics of Pb(Zr,Ti)O3 (PZT) are widely used in piezoelectric devices such as ultrasonic generators, sensors, resonators, and actuators. Recently, there has been a strong demand to develop environmentally friendly, that is, lead-free ferroelectric and piezoelectric ceramics. (Bi1/2K1/2)TiO3 [BKT] is one of bismuth based perovskite materials and showing high Curie temperature at approximately 400 oC and relatively large piezoelectric strain constant d33 about 100 pC/N. Therefore, BKT ceramics have been paid attention as one of candidates for lead-free piezoelectric actuator materials. In this study, we demonstrated multilayer piezoelectric actuators by using lead-free BKT ceramics and showing good electrical properties as compared with bulk BKT ceramics.
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