Transition jitter estimates in tilted and conventional perpendicular recording media at 1 Tb/in2

被引：56

作者：

Gao, KZ ^{[1
]}

Bertram, HN ^{[1
]}

机构：

[1] Univ Calif San Diego, Ctr Magnet Recording Res, La Jolla, CA 92093 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2003年 / 39卷 / 02期

关键词：

micromagnetic simulation; perpendicular recording; signal-to-noise ratio; thermal stability; tilted perpendicular recording; track edged effect; transition jitter;

D O I：

10.1109/TMAG.2003.808997

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The recent proposal of tilted perpendicular recording for Tb/in(2) 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 45degrees, 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/in(2) exchange optimization and suitable anisotropy distribution limits give percentage transition jitter of 10% and 30% for tilted and conventional perpendicular media, respectively.

引用

页码：704 / 709

页数：6

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