HIGH PRESSURE HIGH TEMPERATURE (HPHT) METHOD FOR THE PRODUCTION OF SINGLE CRYSTAL DIAMONDS

摘要

A high pressure high temperature (HPHT) method for synthesizing single crystal diamond, wherein a single crystal diamond seed having an aspect ratio of at least (1) and a growth surface substantially parallel to a {110} crystallographic plane is utilised is described. The growth is effected at a temperature in the range from 1280°C to 1390°C.