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Synthesis of AlN needles by nitridation of Al–Si melt
2016 年 124 巻 10 号 p. 1161-1163
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2016 年 124 巻 10 号 p. 1161-1163
Needle-like single crystals of aluminum nitride (AlN) were synthesized by the direct nitridation of an Al–Si binary melt. The growth behavior and shape of the needles were changed by varying the Al:Si ratio. With lower Al content, needles with high aspect ratio (>20) preferentially grew on the Al–Si melt and crucible wall. With increasing Al content, needles with lower aspect ratios having various shapes such as ribbon-like and bended shapes tended to grow. The longer directions of the needles could mainly correspond to the c-axis of a wurtzite-type AlN.
