Synthesis and characterization of diamond with KBH4 additive under high pressure and high temperature conditions
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-04-13 |
| Journal | Modern Physics Letters B |
| Authors | Zhenxiang Zhou, Fangbiao Wang, Hailiang Huang, Hongwei Jiang, Youjin Zheng |
| Institutions | China National Building Materials Group (China), Jilin University |
| Citations | 3 |
Abstract
Section titled āAbstractāIn this paper, diamond single crystals have been successfully synthesized with potassium berohydride (KBH 4 ) additive from 0 wt.% to 0.4 wt.% in the NiMnCo-C system at 6 GPa and temperature range of 1300[Formula: see text]C-1350[Formula: see text]C by temperature gradient growth (TGG) method. The results of experiments showed that the color of diamond crystals changed from light yellow to dark blue to black, as the KBH 4 content increases from 0 wt.% to 0.4 wt.%. The results of FTIR absorption spectroscopy showed that the peaks of boron-related enhanced with an increase of KBH 4 additive. The XPS results showed that the boron, hydrogen, nitrogen and oxygen coexisted in the diamond crystal. The results of Hall effect measurements indicated that the synthesized diamonds using KBH 4 as additive presented [Formula: see text]-type semiconductor characterizations. The Hall mobility was nearly equivalent between diamond crystals of with 0.2 wt.% and 0.4 wt.% KBH 4 additive, but which was all extremely low due to scattering causing by N and O defects. While the concentrations of carrier and conductivity of the co-doped diamonds enhanced with increasing KBH 4 additive.