| Project/Area Number |
20550052
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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 chemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
HINATSU Yukio Hokkaido University, 大学院・理学研究院, 教授 (70271707)
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| Research Collaborator |
SHIMODA Yuki 北海道大学, 大学院・理学院化学専攻, 修士課程
SASAKI Akira 海道大学, 大学院・理学院化学専攻, 修士課程
ENDO Takeshi 北海道大学, 大学院・理学院化学専攻, 修士課程
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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 |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 希土類 / 酸化物 / ペロブスカイト / 磁気的性質 / 希土類元素 / 白金族元素 / 磁化率 / 比熱 / 反強磁性 / 磁気秩序 / 磁気的フラストレーション |
|---|
| Research Abstract |
Preparation, crystal structures and magnetic properties of quaternary rare earth oxides Ba_4LnM_3O_<12> (Ln=Rare earths ; M=Ru, Ir) were investigated. It was found that the M_3O_<12> trimers and LnO_6 octahedra are alternately linked by corner-sharing and form the perovskite-type structure with 12 layers. Their magnetic properties are not only due to magnetic ordering of L and M elements, but also due to peculiar magnetic behavior of the M_3O_<12> trimer.
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