A SiON overcoat for use on magnetic media for magnetic recording. The SiON overcoat is deposited by pulsed DC sputtering while applying a negative DC bias. The SiON overcoat is especially useful on perpendicular magnetic recording media because of its ability to deposit thinly and evenly on a rough,...http://www.google.de/patents/US20070054153?utm_source=gb-gplus-sharePatent US20070054153 - SiN overcoat for perpendicular magnetic recording media
