| Project/Area Number |
25810054
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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 |
Functional solid state chemistry
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| Research Institution | Nihon University |
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Principal Investigator |
ZHOU Biao 日本大学, 文理学部, 准教授 (80434067)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 誘電特性 / ポーラス結晶 / 構造相転移 / 分子運動の自由度 / 誘電性 / 分子動力学 / 磁性 / 水熱合成法 / マルチ機能物質 |
|---|
| Outline of Final Research Achievements |
The dielectric properties of the 1D water clusters confined in the porous crystal, [Co3(2,4-pydc)2(μ3-OH)2](9H2O), were examined. The dielectric constant decreased abruptly below 200 K, where a structural phase transition occurred as a result of the freezing of thermal motion of the guest water molecules at 200 K. The dielectric constant increased sharply above 300 K, and a hysteresis loop observed at 340 K indicated the antiferroelectric state of the guest water system. In addition, the honeycomb-type porous crystal [La(OX)1.5(H2O)3](2.5H2O) exhibited a structural phase transition accompanied by the freezing of the thermal motion of water molecules in the layers, and the dielectric anomalies were observed at 120 K and 250 K, correspondingly.
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