Method of making a single crystal CVD diamond.

摘要

A method is provided for making a single crystal diamond by chemical vapor deposition which utilizes a single crystal seed of a HPHT diamond and a hydrocarbon-hydrogen mixture, such as methane-hydrogen mixtures containing a effective amount of a metallocene, such as ferrocene. It has been found that the use of a metallocene in the hydrocarbon-hydrogen mixture suppresses secondary nucleation of polycrystalline diamond.