Catalytic Effect Analysis of Metallic Catalyst During Diamond Single Crystal Synthesis

By transition metals (Fe, Ni, Mn, Co) and their alloys as catalysts during the diamond synthesis, some transition phases will be formed, such as Fe3C type carbides and gamma solid solutions. Based on the empirical electron theory of the solid and molecules, the valence electron structures of different kinds of carbides and gamma solid solutions and the relative electron density differences of various diamond/carbide and gamma solid solution/carbide interfaces were calculated and analyzed in this paper. The electron structure conditions of the ideal catalyst were presented by analyzing the different catalytic effects of the catalysts, which provide a new theoretical path to the optimal design of the catalyst composition.