| Original Articles |
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Grow Large High-Quality Diamonds with Different Seed Surfaces |
| ZANG Chuan-Yi;JIA Xiao-Peng;MA Hong-An;LI Shang-Sheng;TIAN Yu;XIAO Hong-Yu |
| The National Key Laboratory for Superhard Materials, Jilin University, Changchun 130012 |
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| Cite this article: |
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ZANG Chuan-Yi, JIA Xiao-Peng, MA Hong-An et al 2006 Chin. Phys. Lett. 23 214-216 |
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Abstract Large high-quality type Ib diamond crystals have been grown with different seed surfaces by temperature gradient method at 5.5GPa, 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 difficult 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 2.5mg/h, while the growth rate of large high-quality diamond c
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| Keywords:
81.05.Uw
81.10.Aj
81.10.Dn
81.10.h
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Published: 01 January 2006
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| PACS: |
81.05.Uw
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81.10.Aj
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(Theory and models of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
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81.10.Dn
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(Growth from solutions)
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81.10.h
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