Nitrogen Coordination in Oxynitride Glasses

Soda‐silica and soda‐lime‐silica glasses were prepared with varying amounts of Si 3 N 4 , to produce oxynitride glasses with nitrogen contents up to 3.23 mol%. The glasses were analyzed by Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy, and evidence for the formation of tricoordinated nitrogen groups in the glasses was obtained.