| Project/Area Number |
15K17837
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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 chemistry
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
Tsujimoo Yoshihro 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, 主任研究員 (50584075)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 複合アニオン / 酸ハロゲン化物 / 高圧物性 / スピン転移 / 平面４配位 / 層状ペロフスカイト構造 / バンドギャップ / バンドギャップ絶縁体 / 平面四配位 / 層状化合物 / 複合アニオン化合物 / 酸化物 / ハロゲン / 低次元磁性 |
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| Outline of Final Research Achievements |
Synthesis, structure and physical properties of new layered perovskite oxyhalides were investigated. We successfully synthesized two new members of oxyhalide phases Sr2MnO3F and Sr2ZnO2Cl2 under high temperature, high pressure condition. In addition, we observed a pressure-driven spin crossover in Sr2CoO3F. Surprisingly, it was found that the spin crossover involved a novel polyhedral transformation from CoO5 pyramid to CoO5F octahedron as a result of covalent-bond formation between Co and F ions.
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