Obtainment of textured films of aluminum nitride by thermochemical nitridation of sapphire

The possibility of obtaining textured aluminum nitride films by thermochemical nitridation of sapphire in the temperature range of 1200–1500°C in nitrogen atmosphere with the CO content from 0.1 to 5 vol % is shown. The diffusion mechanism of formation of the aluminum nitride film on the sapphire surface under the effect of the reducing medium is established.