DocumentCode
1167980
Title
Transition jitter estimates in tilted and conventional perpendicular recording media at 1 Tb/in2
Author
Gao, Kai-Zhong ; Bertram, H.N.
Author_Institution
Center for Magnetic Recording Res., Univ. of California, La Jolla, CA, USA
Volume
39
Issue
2
fYear
2003
fDate
3/1/2003 12:00:00 AM
Firstpage
704
Lastpage
709
Abstract
The recent proposal of tilted perpendicular recording for Tb/in2 densities is extended here to examine the effects of intergranular exchange and anisotropy distributions on signal-to-noise ratio. This new recording system includes the single pole head, the medium and the soft underlayer as in perpendicular recording, but the medium anisotropy axes are titled at about 45°, optimally in the crosstrack direction. Both analytical formulas and micromagnetic simulations are utilized and both tilted and conventional perpendicular media are considered. At 1.2 Tb/in2 exchange optimization and suitable anisotropy distribution limits give percentage transition jitter of 10% and 30% for tilted and conventional perpendicular media, respectively.
Keywords
digital magnetic recording; grain size; jitter; magnetic recording noise; micromagnetics; perpendicular magnetic anisotropy; perpendicular magnetic recording; simulation; thermal stability; SNR; anisotropy distribution limits; anisotropy distributions; conventional perpendicular recording media; exchange optimization; intergranular exchange; micromagnetic simulations; recording system; signal-to-noise ratio; single pole head; soft underlayer; thermal stability; tilted perpendicular recording media; track edge effect; transition jitter estimates; Anisotropic magnetoresistance; Jitter; Magnetic recording; Micromagnetics; Perpendicular magnetic recording; Proposals; Signal to noise ratio; Solid modeling; Stability criteria; Thermal stability;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2003.808997
Filename
1190088
Link To Document