| Grow Large High-Quality Diamonds with Different Seed Surfaces |
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| 作者姓名： | 臧传义 贾晓鹏 马红安 李尚升 田宇 肖鸿宇 |
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| 作者单位： | The National Key Laboratory for Superhard Materials, Jilin University, Changchun 130012 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 50572032. |
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| 摘 要： | Large high-quality type Ib diamond crystals have been grown with different seed surfaces by temperature gradient method at 5.5 CPa, 1500-1600K, with NiMnCo alloy as the metal solvent. Compared with {100} as the growth surface, the growth region of large high-quality diamond crystals with {111} as the growth surface at a higher growth rate shifts markedly from lower temperatures （suitable for {100}-facet growth） to higher temperatures （suitable for {111}-facet growth）. However, regardless of different growth surfaces, {100} or {111}, the grown crystals of sheet-shaped shape are most difflcult for metal inclusions to be trapped into, and whether or not matched growth between the seed surfaces and the growth temperatures determines the crystal shapes. In view of the growth rates, large high-quality diamond crystals of sheet-shaped shapes can be grown at a growth rate of above 2.5 mg/h, while the growth rate of large high-quality diamond crystals should not be beyond 1.5 mg/h for tower-shaped crystals.
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| 关 键 词： | 高质量 金刚石晶体 生长速率 生长区域 |
| 收稿时间： | 2005-08-17 |
| 修稿时间： | 2005-08-17 |
Grow Large High-Quality Diamonds with Different Seed Surfaces |
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| ZANG Chuan-Yi, JIA Xiao-Peng, MA Hong-An, LI Shang-Sheng, TIAN Yu, XIAO Hong-Yu.Grow Large High-Quality Diamonds with Different Seed Surfaces[J].Chinese Physics Letters,2006,23(1):214-216. |
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| Authors: | ZANG Chuan-Yi JIA Xiao-Peng MA Hong-An LI Shang-Sheng TIAN Yu XIAO Hong-Yu |
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