DocumentCode
1485407
Title
1.5 Gbit/in2 perpendicular recording with inductive head
Author
Honda, N. ; Ouchi, K. ; Iwasaki, S.
Author_Institution
Akita Res. Inst. of Adv. Technol., Japan
Volume
33
Issue
5
fYear
1997
fDate
9/1/1997 12:00:00 AM
Firstpage
3097
Lastpage
3099
Abstract
High density recording on perpendicular recording media using inductive heads was studied. A MIG head with a small gap length of 0.15 μm could write on a Co-Cr medium of 100 nm thickness with the same write performance as that of a head with a larger gap length. A high D 50 of over 200 kFRPI with the S/N of 30 dB was obtained for a track width of 3 μm, indicating a high areal density recording of 1.5 Gbit/in2. The density limit would be increased much higher using an improved Co-Cr-Nb medium with a high resolution AMR head. Improvement in O/W was obtained by introducing a thin soft magnetic backlayer. A small time decay in the output and the low noise property of the double layer media were also confirmed
Keywords
chromium alloys; cobalt alloys; ferromagnetic materials; magnetic recording noise; niobium alloys; perpendicular magnetic recording; 0.15 micron; 100 nm; 3 micron; AMR head; CoCr; CoCrNb; MIG head; areal density recording; density limit; double layer media; gap length; high density recording; inductive head; noise property; perpendicular recording; thin soft magnetic backlayer; time decay; track width; write performance; Coercive force; Grain size; Magnetic confinement; Magnetic heads; Magnetic noise; Magnetic recording; Magnetosphere; Noise level; Perpendicular magnetic recording; Signal to noise ratio; Soft magnetic materials; Tail;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.617856
Filename
617856
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