| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2017: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
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| Outline of Final Research Achievements |
Complex oxides consisting of various rare-earth oxides, titanium oxide, and niobium oxide, which can be synthesized at above 1200°C by heating in air using solid-state reaction, in general, have been crystallized from precursor solutions of inorganic metal salts under hydrothermal conditions at 200-240°C using green processing. They have been synthesized directly as aeschynite-type nano-sized crystals. Aeschynite-type nano-crystals doped with Er3+，Eu3+，and Dy3+ as activators and those co-doped with Er3+ and Yb3+ as a sensitizer have been prepared hydrothermally, and their properties such as crystalline phase, luminescence, and up-conversion luminescence have been investigated.
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