Material design for hybrid functionality using covalently bonded macro-tetrahedral compounds composed of light elements
Project/Area Number |
23656390
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
Allocation Type | Multi-year Fund |
Research Field |
Inorganic materials/Physical properties
|
Research Institution | Tohoku University |
Principal Investigator |
|
Project Period (FY) |
2011 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
Keywords | 高圧合成 / 共有結合 / 結晶化学 / 機能設計 / イオン伝導体 / 発光材料 / セラミックス / 共有結合性結晶 / 固体電解質 / マクロテトラへドロン / ナノ材料 |
Research Abstract |
New covalently bonded “macro-tetrahedral compounds" were synthesized under high-pressure condition and the atom insertion was attempted to promote functionality. Ternary thio-borates, CaB_2S_4 and Li_2B_2S_5, were successfully synthesized at 3-5 GPa and600-1000℃ and their crystal structures were analyzed. Photo-luminescence was observed in Eu-doped CaB_2S_4 when excited at 340-460 nm. Structural analysis of Li_2B_2S_5 strongly suggests that this phase is a candidate material for low-temperature Li-ion conductor.
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Report
(3 results)
Research Products
(4 results)