| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Quinary iron oxyselenide was synthesized by a solid-state reaction. In this compound, Cu ions are coordinated by four selenide ions, forming CuSe layers, and Fe ions are coordinated by five oxide ions, forming Fe-O layers with corner-sharing the FeO5 pyramids. These CuSe and Fe-O layers with square lattices stack alternately along the c-axis.
The Cu and Fe ions are in the monovalent and trivalent states, respectively, and the Fe ion shows the two dimensional magnetic ordering below room temperature.
Through powder neutron diffraction measurements, it was found that the Fe and Cu ions occupy the crystallographically independent sites and that the Fe ions have a long-range magnetic ordering at low temperatures.
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