Transition jitter estimates in tilted and conventional perpendicular recording media at 1 Tb/in/sup 2/
Transition jitter estimates in tilted and conventional perpendicular recording media at 1 Tb/in/sup 2/
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DOI：
10.1109/tmag.2003.808997
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发表时间：
2003-05
影响因子：
2.1
通讯作者：
K. Gao;H. Bertram
中科院分区：
文献类型：
--
作者：
K. Gao;H. Bertram
本文扩展了最近提出的对Tb/in/sup 2/密度进行倾斜垂直记录的建议，以研究晶间交换和各向异性分布对信噪比的影响。该记录系统包括单极磁头、介质和软底层，与垂直记录一样，但介质各向异性轴的方向约为45/spl度/，最佳方向为串线方向。采用了解析公式和微磁模拟，并考虑了倾斜介质和传统垂直介质。在1.2 Tb/in/sup / /交换优化和合适的各向异性分布限制下，倾斜介质和常规垂直介质的转换抖动百分比分别为10%和30%。
The recent proposal of tilted perpendicular recording for Tb/in/sup 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 45/spl deg/, 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/sup 2/ exchange optimization and suitable anisotropy distribution limits give percentage transition jitter of 10% and 30% for tilted and conventional perpendicular media, respectively.