Title :
The Effects of the Pd-TiN Seed Layer on the Magnetic Properties of Co/Pd Multilayered Media
Author :
Kim, Sungman ; Chun, DongWon ; Lee, JungJoong ; Jeung, WonYoung
Author_Institution :
Div. of Mater. Res., Korea Inst. of Sci. & Technol., Seoul, South Korea
fDate :
6/1/2010 12:00:00 AM
Abstract :
We investigated a Pd-TiN thin film as a seed layer for a [Co/Pd] multilayered perpendicular magnetic recording media. The 15-nm Pd-TiN thin film and [Co(0.2 nm)/Pd(0.8 nm)] multilayered media were fabricated by dc magnetron sputtering without heating the substrate. The Pd-TiN(20 vol.%) granular seed layer with apparent grain boundaries is considered to provide suitable seeds to [Co/Pd] multilayer and reduced the magnetic exchange coupling of [Co/Pd] grains causing an increase of the perpendicular coercive field and a decrease of the magnetic cluster size for the [Co/Pd] multilayered media. These results suggest that the Pd-TiN seed layer contributed to the formation of physically well-separated [Co/Pd] multilayered grains, improving the magnetic properties of [Co/Pd] multilayered media.
Keywords :
cobalt; coercive force; exchange interactions (electron); grain boundaries; magnetic multilayers; magnetic thin films; palladium; perpendicular magnetic recording; sputter deposition; titanium compounds; Pd-TiN-Co-Pd; apparent grain boundaries; dc magnetron sputtering; granular seed layer; magnetic cluster size; magnetic exchange coupling; multilayered grains; multilayered perpendicular magnetic recording media; perpendicular coercive field; thin film; Magnetic anisotropy; Magnetic materials; Magnetic multilayers; Magnetic properties; Magnetic separation; Materials science and technology; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Sputtering; Tin; Co/Pd multilayer; Pd-TiN seed layer; perpendicular magnetic recording media; seed layer;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2040590
