DocumentCode :
860568
Title :
Fabrication of SmCo 
Double-Layered Perpendicular Magnetic Recording Media
Author :
Osaka, Tetsuya ; Yamashita, Yuki ; Sayama, Junichi ; Asahi, Toru ; Ariake, Jun ; Harada, Kiko ; Ouchi, Kazuhiro
Author_Institution :
Graduate Sch. of Sci. & Eng., Waseda Univ., Tokyo
Volume :
43
Issue :
6
fYear :
2007
fDate :
6/1/2007 12:00:00 AM
Firstpage :
2109
Lastpage :
2111
Abstract :
We fabricated SmCo5 double-layered perpendicular magnetic recording media with high perpendicular magnetic anisotropy for realizing ultra high density recording. A double-layered medium with a Ru buffer layer introduced between a Cu/Ti intermediate layer and a Co-Zr-Nb soft magnetic underlayer exhibited high perpendicular magnetic anisotropy, whereas that without the Ru buffer layer did not. Auger electron spectroscopy revealed that the Ru buffer layer inhibited interdiffusion between the Cu/Ti intermediate layer and the Co-Zr-Nb soft magnetic underlayer. We report here for the first time the read-write characteristics of SmCo5 double-layered perpendicular magnetic recording media. The medium noise was small in the medium with a Sm-Co layer deposited under high Ar gas pressure owing to small magnetic clusters
Keywords :
Auger electron spectra; buffer layers; cobalt alloys; copper; interface magnetism; magnetic recording noise; magnetic thin films; niobium alloys; perpendicular magnetic anisotropy; perpendicular magnetic recording; samarium alloys; titanium; zirconium alloys; Auger electron spectroscopy; Cu-Ti-CoZrNb-SmCo5-Ru; buffer layer; double layered perpendicular magnetic recording media; interdiffusion inhibition; intermediate layer; medium noise; perpendicular magnetic anisotropy; soft magnetic underlayer; ultra high density recording; Argon; Buffer layers; Electrons; Fabrication; Magnetic anisotropy; Magnetic noise; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Soft magnetic materials; Spectroscopy; Cu/Ti intermediate layer; Ru buffer layer; SmCo$_{5}$
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2007.892591
Filename :
4202868
Link To Document :
