The influence of a convection field on the growth of high-quality diamond under high-temperature, high-pressure conditions using catalyst systems with different viscosities

Abstract

In this work, the effect of catalyst viscosity on diamond growth was studied by simulating and analyzing the catalyst convection field in a diamond synthesis chamber under different viscous catalyst...

Synthesis and Characterization of Fe–C–Si System Ib-Type Gem-Grade Diamond Single Crystals under High Temperature and Pressure

“…Raman spectroscopy is a technique that employs monochromatic radiation to examine the energy difference between transmitted and incident light. The interaction between the electric field components of materials and light generates or counteracts lattice vibrations, and the energy absorbed or released during vibration is unique to the material and its structure . In this experiment, Raman spectroscopy analysis was conducted on diamond crystals to investigate the effect of different silicon contents on the internal structure of the crystals, as shown in Figure .…”

“…The interaction between the electric field components of materials and light generates or counteracts lattice vibrations, and the energy absorbed or released during vibration is unique to the material and its structure. 37 In this experiment, Raman spectroscopy analysis was conducted on diamond crystals to investigate the effect of different silicon contents on the internal structure of the crystals, as shown in Figure 8. The Raman spectrum of silicon-doped diamond single crystals is exceptionally clean, with only a strong and narrow peak observed near 1332.00 cm −1 , which is a typical diamond Raman characteristic peak.…”