2012 Fiscal Year Final Research Report
High-pressure synthesis, dielectric and magnetic properties for A-site ordered perovskite oxides
| Project/Area Number |
23750245
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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 | Gakushuin University |
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Principal Investigator |
MORI Mori 学習院大学, 理学部化学科, 助教 (00432021)
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| Co-Investigator(Renkei-kenkyūsha) |
INAGUMA Yoshiyuki 学習院大学, 理学部化学科, 教授 (00240755)
HIRAKI Kohichi 学習院大学, 理学部物理学科, 理学部物理学科 (00306523)
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| Project Period (FY) |
2011 – 2012
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| Keywords | セラミックス / 高圧合成 / 誘電性 |
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| Research Abstract |
The solid solutions based on CaCu3Ti4O12were successfully synthesized by high-pressure synthesis. With increasing an amount of doping ion the A-O and Cu-O bond length increased systematically and the dielectric constant at room temperature decreased significantly. On the other hand, the magnetic susceptibility for all sample in the CaCu3Ti4O12solid solutions showed antiferromagnetic behavior. High-pressure synthesis of another A-site ordered perovskite type oxides, AA’3Ti4O12, was performed under 3-7.5 GPa. A novel perovskite oxide was successfully obtained. Itsrelationship between composition and physical properties will be investigated.
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