| Project/Area Number |
26810126
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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 industrial materials
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| Research Institution | Tokyo University of Science (2015)
National Institute for Materials Science (2014) |
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Principal Investigator |
Norihiro Suzuki 東京理科大学, 研究推進機構総合研究院, 助教 (10595888)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 多孔体 / チタン酸バリウム / キュリー温度 / 歪み / ゾル－ゲル法 / Curie温度 / sol-gel法 / メソ多孔体 / ゾルゲル法 |
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| Outline of Final Research Achievements |
Porous barium titanate thin film was synthesized by the soft-template method. From the temperature dependence of Raman spectrum, I clarified that ferroelectric tetragonal phase was thermally stabilized by introduced porosity. Owing to this, the Curie temperature (the temperature until which ferroelectricity remains) of porous thin film became much higher than that of a bulk single crystal. In addition, by analyzing the high-magnified transition electron microscope (TEM) image, I confirmed that the porosity introduced an anisotropic compressive strain, which deformed the crystal in order to enhance ferro(piezo)electricity.
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