Development and Evaluation of Inorganic Electro-optic Crystals Based on a New Theory
Project/Area Number |
25289224
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Inorganic materials/Physical properties
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Research Institution | Tokyo Institute of Technology |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
TAKEDA Hiroaki 東京工業大学, 大学院理工学研究科, 准教授 (00324971)
HOSHINA Takuya 東京工業大学, 大学院理工学研究科, 助教 (80509399)
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2015: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2013: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
|
Keywords | 電気光学効果 / セラミックス / 誘電体 / 強誘電体 / リラクサ / ペロブスカイト / 単結晶 / 非鉛系材料 / 非鉛材料 |
Outline of Final Research Achievements |
This study aimed for developing new lead-free electro-optic (EO) materials with superior performance to lanthanum-added lead zirconate titanate (PLZT). A measuring system of EO-effect was developed for opaque polycrystalline samples prepared by conventional solid state reaction process. Materials studied were pseudo-cubic provskite relaxors. We found that some barium titanate-based relaxors with the composition of barium titanate added with barium zirconate, calcium titanate and barium tin oxide exhibited higher EO-effect than that of PLZT. The EO-coefficients showed a maximum at room temperature and decreased with increasing temperature. The temperature dependence of the EO-coefficients was similar to that of permittivity of these materials.
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Report
(4 results)
Research Products
(21 results)