| Project/Area Number |
20550135
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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 |
Functional materials chemistry
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
YAMAMOTO Ayako The Institute of Physical and Chemical Research, 無機電子複雑系研究チーム, 基幹研究所研究員 (50398898)
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| Co-Investigator(Kenkyū-buntansha) |
OHGUSHI Kenya 東京大学, 物性研究所, 特任講師 (30455331)
HASHIZUME Daisuke 独立行政法人理化学研究所, 物質構造解析チーム, 先任研究員 (00293126)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 遷移金属酸化物 / 水銀含有酸化物 / パイロクロア型構造 / ヘキサゴナルブロンズ構造 / 超伝導 / 金属酸化物 / 高圧合成 / 機能開拓 / 構造相転移 / 金属絶縁体転移 / 高圧力合成 |
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| Research Abstract |
Synthesis and function development of mercury-including pyrochlore-type oxides were studied. We have successfully prepared a new half-metallic compound, Hg_2Ir_2O_7, with pyrochlore-type structure. We have also obtained a new superconductor, Hg_xReO_3 (x=0.4), with hexagonal bronze structure. The superconducting critical temperatures were 8.0 K and 11.1 K at ambient and 4 GPa, respectively.
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