2015 Fiscal Year Final Research Report
Low temperature solution growth of high quality AlN single crystal using Cr-alloy solvent
| Project/Area Number |
26630376
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Metal making/Resorce production engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 窒化アルミニウム / 溶液成長 / 直接観察 / 溶解度 |
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| Outline of Final Research Achievements |
In the present work, research on solution growth of AlN using Cr-alloy solvent was conducted. Firstly, nitrogen and AlN solubilities in Cr-alloy were measured, and higher AlN solubility in Cr-Ni alloy than previous solvent was determined. Secondary, solution growth of AlN using Cr-Ni alloy was examined. Solution growth using Cr-44mol%Ni and Cr-30mol%Ni alloys was performed, and the highest growth rate of 300 micron/h was achieved on the AlN-coated sapphire seed. Furthermore, the apparatus for direct-observation of AlN growth through sapphire substrate was fabricated, and the observation of island growth of AlN on sapphire substrate was successfully achieved at 1600℃.
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| Free Research Field |
高温物理化学
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