Reconstruction of the Growth History of a Large Synthesized Diamond Crystal by Synchrotron Topography

Wan Li Yu; Xiao Peng Jia; Qing Xi Yuan

doi:10.4028/www.scientific.net/AMR.739.7

Paper Titles

Preface

Preparation and Characterization of Copolymer of Lactic Acid and N, N-Bis (hydroxyethyl) Glycin
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Reconstruction of the Growth History of a Large Synthesized Diamond Crystal by Synchrotron Topography
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Study on a Novel Structure of Zn Phenanthroline Malic Acid Hydrate, [Zn (C₁₂H₈N₂)(C₄H₄O₅)(H₂O)](H₂O)
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Study on a Structure of 2,6-pyridine-dicarboxylic Acid Cobalt Calcium Hexahydrate
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Study on a Structure of Manganese Oxide, Mn₃O₆(H₂O)₂
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 739Reconstruction of the Growth History of a Large...

Reconstruction of the Growth History of a Large Synthesized Diamond Crystal by Synchrotron Topography

Abstract:

The growth history of a large diamond crystal synthesized by HPHT temperature gradient method was reconstructed by the defects features in the crystal. The crystal defects were revealed using white synchrotron radiation topography. Dislocations originated from the surfaces of the seed and extended along the directions of <100> were observed within the crystal grown at the early stage. The crystal was then grown to the [00-direction at the middle growing stage and no dislocations were generated at this stage. A lot of dislocation bundles were generated at the last growth stage of the crystal and each bundle was composed of several straight extended dislocations originated from the same point and extended radially within a sector of about thirty degrees centigrade. The origins of the dislocation bundles were distributed near the surface of the crystal. Most of the dislocation bundles were generated near the (-100), (010) and (00-1) and extended to the [-10, [01 and [00-, approximately. The generation of the dislocation bundles was caused by the rapid descent of the temperature in the last growth stage of the diamond crystal.

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Advanced Materials Research (Volume 739)

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7-11

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.739.7

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Online since:

August 2013

Authors:

Wan Li Yu, Xiao Peng Jia, Qing Xi Yuan

Keywords:

Crystal Defects, Crystal Growth, Synchrotron Topography, Synthesized Diamond

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