Thank you Prosper Kanyong, but I am looking for diamond films, not diamond-like carbon films, therefore on the composite should not exist sp2 bondings.

To get diamond films you need high energy such as microwave plasma, if you use cathodic vaccum arc you will get diamond like carbon (DLC). Even the use of RF source gives DLC. 

What do you means higher energy? ion energy? reference?

You need a high atomic hydrogen concentration to grow diamond at low pressure. This is efficiently made by a microwave plasma, hence the prevalence of this technique in diamond growth. Another method commonly used is a hot filament to dissociate molecular hydrogen which is far less efficient, but can easily be scaled over large areas. Diamond can be grown from a DC Arc but there are plenty of probelms, the high ion energy being one. I assume you mean cathodic arc with carbon target?

In general, cathodic arc deposition is electric evaporation of metal target (cathodes) under nitrogen atmosphere to deposit hard protective nitride coatings on biased or unbiased substrates. It is essentially a PVD process with line of sight deposition of metal ions on suitable substrates at lower temperature. But CVD diamond is a metastable growth process at low pressure and high enough temp. to produce enough nascent hydrogen for facilitating diamond phase - which is not possible under cathodic arc PVD conditions.

You can search internet and will see very old papers but it is not current practice for growing diamond.