Mechanism of Diamond Growth by Hot-Filament Chemical Vapor Deposition: Carbon-13Studies

摘要

Previous 13CH4/12C2H2 isotopic competition experiments on the mechanism ofdiamond growth by chemical vapor deposition are reanalyzed in light of recent evidence for a nonlinear dependence of the first-order Raman shift frequency on 13C mole fraction. The new Raman data imply a 13C mole fraction for mixed-isotope diamond films several percent higher than that reported previously. The corrected