A Study of the Growth Interfaces of Diamond under High Temperature and High Pressure

The growth interface of diamond crystal and the catalytic alloy film graphite interface were measured by using a scanning electron microscope and Auger scanning microprobe. The groove structures on the catalytic alloy film surface, the diamond surface and the transition layer have been observed. There exist marked differences in the shapes and relative energies of Auger spectra of carbon atom. The changes in line-shapes and relative energies of these Auger line definitely reflect the differences in the wave functions of the 2s and 2p electrons in carbon atoms, in graphite and diamond crystal, respectively.