1. B–C Bond in Diamond Single Crystal Synthesized with h-BN Additive at High Pressure and High Temperature.
- Author
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Yong Li, Zhen-Xiang Zhou, Xue-Mao Guan, Shang-Sheng Li, Ying Wang, Xiao-Peng Jia, and Hong-An Ma
- Subjects
BORON compounds ,DIAMONDS spectra ,SINGLE crystals ,FOURIER transform infrared spectroscopy ,WAVENUMBER ,CHEMICAL vapor deposition - Abstract
The synthesis of diamond single crystal in the Fe
64 Ni36 -C system with h-BN additive is investigated at pressure 6.5 GPa and temperature range of 1300–1400°C. The color of the obtained diamond crystals translates from yellow to dark green with increasing the h-BN addition. Fourier-transform infrared (FTIR) results indicate that sp2 hybridization B-N-B and B-N structures generate when the additive content reaches a certain value in the system. The two peaks are located at 745 and 1425 cm−1 , respectively. Furthermore, the FTIR characteristic peak resulting from nitrogen pairs is noticed and it tends to vanish when the h-BN addition reaches 1.1 wt%. Furthermore, Raman peak of the synthesized diamond shifts down to a lower wavenumber with increasing the h-BN addition content in the synthesis system. [ABSTRACT FROM AUTHOR]- Published
- 2016
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