中国物理B ›› 2011, Vol. 20 ›› Issue (12): 128102-128102.doi: 10.1088/1674-1056/20/12/128102

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Shape-controlled synthesis of diamond crystal by epitaxial growth under high pressure and high temperature conditions

黄海亮1, 刘晓兵2, 贾晓鹏2, 张壮飞2, 周振祥2, 马红安2   

  1. (1)Mudanjiang Normal University, Mudanjiang 157012, China; (2)State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • 收稿日期:2011-06-02 修回日期:2011-06-24 出版日期:2011-12-15 发布日期:2011-12-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51172089) and the Graduate Innovation Fund of Jilin University (Grant No. 20111022).

Shape-controlled synthesis of diamond crystal by epitaxial growth under high pressure and high temperature conditions

Liu Xiao-Bing(刘晓兵)a), Jia Xiao-Peng(贾晓鹏)a), Zhang Zhuang-Fei(张壮飞)a),Huang Hai-Liang(黄海亮)b), Zhou Zhen-Xiang(周振祥)a), and Ma Hong-An(马红安)a)†   

  1. a State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; b Mudanjiang Normal University, Mudanjiang 157012, China
  • Received:2011-06-02 Revised:2011-06-24 Online:2011-12-15 Published:2011-12-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51172089) and the Graduate Innovation Fund of Jilin University (Grant No. 20111022).

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摘要： In this paper, the diamond epitaxial growth mechanism has been studied in detail by employing several types of diamond as a seed in a catalyst-graphite system under high pressure and high temperature (HPHT) conditions. We find that the diamond nucleation, growth rate, crystal orientation, and morphology are significantly influenced by the original seeds. The smooth surfaces of seeds are beneficial for the fabrication of high-quality diamond. Our results reveal that the diamond morphology is mainly determined by the original shape of seeds in the early growth stage, but it has an adjustment process during the growth and leads to well symmetry. Additionally, we have also established the growth model for the twinned diamond grown on several seeds, and proposed the possible growth processes by tracking the particular shapes of seeds before and after treatment under HPHT conditions. These results suggest that the shape-controlled synthesis of diamond with well morphology can be realized by employing certain suitable diamond seeds. This work is expected to play an important role in the preparation of trustworthy diamond-based electronic and photonic devices.

关键词: diamond, nucleation, morphology, seed

Abstract: In this paper, the diamond epitaxial growth mechanism has been studied in detail by employing several types of diamond as a seed in a catalyst-graphite system under high pressure and high temperature (HPHT) conditions. We find that the diamond nucleation, growth rate, crystal orientation, and morphology are significantly influenced by the original seeds. The smooth surfaces of seeds are beneficial for the fabrication of high-quality diamond. Our results reveal that the diamond morphology is mainly determined by the original shape of seeds in the early growth stage, but it has an adjustment process during the growth and leads to well symmetry. Additionally, we have also established the growth model for the twinned diamond grown on several seeds, and proposed the possible growth processes by tracking the particular shapes of seeds before and after treatment under HPHT conditions. These results suggest that the shape-controlled synthesis of diamond with well morphology can be realized by employing certain suitable diamond seeds. This work is expected to play an important role in the preparation of trustworthy diamond-based electronic and photonic devices.

Key words: diamond, nucleation, morphology, seed

中图分类号:  (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)

  • 81.10.-h
81.05.ug (Diamond)