4. Conclusions. Tantalum nitride films were deposited on ceramic substrates (pre-sputtered with underlayer and 100-nm-thick aluminum oxide) by DC reactive magnetron sputtering using a Ta target under a typical base pressure of 10 â7 Torr.
Earth's atmosphere is a thin blanket of gases and tiny particlesâtogether called air. Without air, the Earth would just be another lifeless rock orbiting the Sun. Although we are rarely aware of it, air surrounds us. We are most aware of air when it moves, creating wind.
But more of that in a second. The Earthâs atmosphere is composed of the following molecules: nitrogen (78%), oxygen (21%), argon (1%), and then trace amounts of carbon dioxide, neon, helium, methane, krypton, hydrogen, nitrous oxide, xenon, ozone, iodine, carbon monoxide, and ammonia.