Title :
Gbit/in2 perpendicular recording using double layer medium and MIG head
Author :
Iwasaki, S. ; Ouchi, K. ; Honda, N.
Author_Institution :
Tohoku Inst. of Technol., Sendai, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
Perpendicular recording has been studied using ring heads for read and write. It was confirmed that an areal recording density of 1 Gbit/in 2 could be achieved by using a MIG type ring head for recording and a narrow gap ring head for reproduction combined with a single layer Co-Cr system alloy medium with a thin soft magnetic backlayer. Improvement in overwrite properties with the backlayer and noise reduction by increasing the Cr content are discussed. It is concluded that it would be possible to realize a 10 Gbit/in2 recording system by perpendicular recording by using a high resolution MR head without any fundamental changes in the medium
Keywords :
chromium alloys; cobalt alloys; magnetic force microscopy; magnetic heads; magnetic multilayers; magnetic recording noise; perpendicular magnetic recording; CoCr; CoCrPt; Cr content; Gbit/in2 perpendicular recording; MFM observation; MIG type ring head; areal recording density; double layer medium; high resolution MR head; narrow gap ring head; noise reduction; overwrite properties; single layer Co-Cr system alloy medium; thin soft magnetic backlayer; Chromium; Disk recording; Hard disks; Magnetic anisotropy; Magnetic heads; Magnetic recording; Noise reduction; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Soft magnetic materials;
Journal_Title :
Magnetics, IEEE Transactions on
