The structure of highly tetrahedral amorphous diamond-like carbon

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Abstract
Amorphous carbon (a-C) prepared by plasma-arc deposition has been examined by neutron scattering. Comparison of the position of the first C-C peak of the radial distribution function with similar data for crystalline diamond shows the amorphous material to be predominantly tetrahedrally bonded with about 14 % trigonal bonding. Structural data indicate that this particular form of a-C is essentially analogous to the other tetrahedral amorphous elemental semiconductors, amorphous silicon and amorphous germanium.