Title :
High Writability Perpendicular Recording Media With Low Noise Crystalline Soft Underlayer
Author :
Shi, J.Z. ; Piramanayagam, S.N. ; Zhao, J.M. ; Mah, C.S. ; Liu, B.
Author_Institution :
Data Storage Inst., Singapore
Abstract :
CoCrPt-SiO2-based perpendicular recording media with a thin intermediate layer and narrow c-axis dispersion of the grains in the magnetic layer were successfully prepared with a crystalline soft underlayer (c-SUL). The recording performance testing results show that media with c-SUL exhibit higher writeability than those on amorphous soft underlayer (a-SUL). The noise from c-SUL can be reduced to be lower than that from a-SUL
Keywords :
chromium alloys; cobalt alloys; magnetic recording noise; perpendicular magnetic recording; platinum alloys; silicon compounds; CoCrPt-SiO2; amorphous soft underlayer; c-axis dispersion; crystalline soft underlayer; high writability perpendicular recording media; low noise crystalline soft underlayer; magnetic layer; thin intermediate layer; Amorphous magnetic materials; Crystallization; Magnetic materials; Magnetic noise; Noise reduction; Perpendicular magnetic recording; Saturation magnetization; Soft magnetic materials; Testing; Writing; Noise; orientation; perpendicular recording media; soft underlayer; writeability;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.888486
