Carbide Identification in Different Regions of a Thin Metal Film Covering on an HPHT As-Grown Diamond Single Crystal from Ni-Mn-C System

Diamond single crystals were synthesized in the presence of NI-Mn catalyst under high temperature and high pressure(HPHT).A thin metal film covering on as-grown diamond formed during diamond growth was examined using transmission electron microscopy.It was shown that phase compositions of the region near the as-grown diamond are different form those of other regions in the film.