Large Defect-Free Synthetic Type IIa Diamond Crystals Synthesized via High Pressure and High Temperature

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概要

• 論文の詳細を見る

• Large high-quality type IIa diamond crystals measuring up to 12 mm in diameter were successfully synthesized by the temperature gradient method at high pressure and high temperature, using high-crystalline-quality (001)-oriented seed crystals, and by controlling the temperature conditions with high precision. The X-ray projection topograph using a synchrotron radiation beam revealed that the large synthetic diamond crystals are characterized by high-crystalline-quality, having no dislocation or stacking fault in the (001) growth sectors in the upper part of the crystals grown on seeds. Diamond crystals containing a large defect free area of 5 \times 5 mm2 or more were successfully produced by controlling the temperature strictly on the low-temperature side in the synthesis region for growing type IIa diamond crystals to allow the (001) growth sectors to become dominant.

• 2012-09-25

著者

• Tamasaku Kenji

  Coherent X-ray Optics Laboratory Harima Institute Riken/spring-8

• Tamasaku Kenji

  Coherent X-Ray Optics Laboratory, RIKEN Harima Institute, Sayo, Hyogo 679-5148, Japan

• Sumiya Hitoshi

  Advanced Materials R&D Laboratories, Sumitomo Electric Industries, Ltd., Itami, Hyogo 664-0016, Japan

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• Experimental Studies of 90° Bragg Reflection from a Sub-Micron InxGa1-xAs Single-Crystal Film Deposited on a GaAs Substrate
• Large Defect-Free Synthetic Type IIa Diamond Crystals Synthesized via High Pressure and High Temperature

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