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中文摘要：
采用改进的升华法在氮气环境下制备氮化铝单晶体。通过优化实验条件制备出了六角形的高质量的氮化铝单晶体。实验发现,在坩埚的不同区域得到的氮化铝晶体的大小和形态有所不同。讨论了温度梯度对氮化铝晶体尺寸大小和形态的影响。
英文摘要：
AlN crystals were grown by modified sandwich sublimation method in nitrogen atmosphere. High quality AlN single crystals with typical hexagonal crystal habit were obtained by optimizing growth conditions. It was found that the AlN crystals which were grown on different regions in the crucible exhibit different crystal habits. The influence of the temperature gradient on the size and morphology of the crystals was discussed.
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