| Project/Area Number |
12650670
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Nagoya University |
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Principal Investigator |
YOGO Toshinobu Center for Integrated Research in Science and Engneering, Nagoya Univ. , Professor, 理工科学総合研究センター, 教授 (00135310)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2001: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2000: ¥2,900,000 (Direct Cost: ¥2,900,000)
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| Keywords | Barium titanate / Hybrid / Complex alkoxides / Metal-organic compounds / Hydrolysis / 重合 / 磁性微粒子 |
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| Research Abstract |
Functional nano particle-organic hybrid has been receiving great attention as a newly imerging material. BaTi03 was selected as a functional nano particle.
(1)BaTi03(BT) precursor was successfully synthesized from barium-organic and titanium alkoxide and a polymerizable ligand.
(2) The formation conditions of nano-crystalline BaTi03 particles were established. The precursor was hydrolyzed and polymerized under the controlled reaction conditions. The polymerization process was analyzed by IR and NMR spectroscopy. The formation conditions of nano-sized BT particles below 100 C were investigated. The crystalline particles in the organic matrix were analyzed by XRD,SAD and EDX. The particle size was found to depend upon the polymerization and hydrolysis conditions.
(3) Transparent films of BT particle-organic hybrid were synthesized. The absorption spectra of films revealed a blue-shift due to quantum size effect. The hybrid showed a prominent electro-rheological effect depending upon the kind of organic ligands. The fibril structure of hybrid in the ER fluid during applying DC voltage was confirmed by optical microscope. The relation between the processing conditions of BT-organic hybrid and its novel dielectric and optical properties has been established.
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