Structural and optical properties of copper nitride thin films in a reactive Ar/N2 magnetron sputtering systemD. Dorranian, L. Dejam, A. H. Sari and A. HojabriEur. Phys. J. Appl. Phys., 50 2 (2010) 20503DOI: https://doi.org/10.1051/epjap/2010040