Effect of synthesis conditions on the impurity composition of STM Almazot diamond single crystals

Effect of synthesis conditions on the impurity composition of STM Almazot diamond single crystals

Diamond single crystals synthesized under various conditions have been characterized by absorption spectroscopy and electron paramagnetic resonance. The results demonstrate that preannealing of the reaction cell materials in an argon-hydrogen mixture and the use of a metal-carbon system containing 3...

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Bibliographic Details
Published in:Inorganic materials Vol. 50; no. 2; pp. 130 - 135
Main Authors: Kazyuchits, N. M., Konovalova, A. V., Azarko, I. I., Yakotsuk, F. F., Bogdanov, I. N., Kabak, Yu. K.
Format: Journal Article
Language:English
Published: Boston Springer US 01-02-2014
Subjects:
Aluminum
Chemistry
Chemistry and Materials Science
Composition effects
Corners
Crystals
Diamonds
Electron paramagnetic resonance
Impurities
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Single crystals
Synthetic Diamond
Electron Paramagnetic Resonance Signal
Aluminum Nitride
Electron Paramagnetic Resonance Spectrum
Nickel Concentration
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Summary:Diamond single crystals synthesized under various conditions have been characterized by absorption spectroscopy and electron paramagnetic resonance. The results demonstrate that preannealing of the reaction cell materials in an argon-hydrogen mixture and the use of a metal-carbon system containing 3 wt % aluminum allow the concentration of process-related impurities in the single crystals to be reduced. The growing crystal captures more impurities in the initial stages of the process, so the impurities are concentrated in the central part of the crystal, near the seed. The concentration of the process-related impurities near the corners of the crystal is substantially lower.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168514020071