Optical Characteristics of Nano-Polycrystalline Diamond Synthesized Directly from Graphite under High Pressure and High Temperature
スポンサーリンク
概要
- 論文の詳細を見る
Optical properties of nano-polycrystalline diamond (NPD) synthesized by direct conversion from high-purity graphite under high pressure and temperature were investigated by infrared (IR), ultraviolet (UV), and photoluminescence (PL) spectroscopy. IR spectroscopy revealed that NPD has no large lattice strain and very few impurities, but possesses an absorption band attributed to a trace of hexagonal diamond. UV spectra displayed a continuous absorption wing due to structural defects and secondary absorption edge attributed to electron transitions from aggregated nitrogen. PL spectra exhibited peaks of N3 centers and broad bands related to dislocations.
- 2009-12-25
著者
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Kagi Hiroyuki
Geochemical Lab. Graduate School Of Sci. The Univ. Of Tokyo
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Irifune Tetsuo
Geodynamics Research Center Ehime University
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Odake Shoko
Geochemical Laboratory Graduate School Of Science The University Of Tokyo
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Sumiya Hitoshi
Electronics and Materials R&D Laboratories, Sumitomo Electric Industries, Ltd., Itami, Hyogo 664-0016, Japan
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Sumiya Hitoshi
Electronics and Materials R&D Laboratories, Sumitomo Electric Industries, Itami, Hyogo 664-0016, Japan
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Harano Katsuko
Electronics and Materials R&D Laboratories, Sumitomo Electric Industries, Ltd., Itami, Hyogo 664-0016, Japan
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Arimoto Keiko
Electronics and Materials R&D Laboratories, Sumitomo Electric Industries, Ltd., Itami, Hyogo 664-0016, Japan
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Arimoto Keiko
Electronics and Materials R&D Laboratories, Sumitomo Electric Industries, Ltd., Itami, Hyogo 664-0016, Japan
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Harano Katsuko
Electronics and Materials R&D Laboratories, Sumitomo Electric Industries, Ltd., Itami, Hyogo 664-0016, Japan
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Kagi Hiroyuki
Geochemical Laboratory, Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
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Odake Shoko
Geochemical Laboratory, Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
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