Effect of island geometry on the replay signal in patterned media storage
Effect of island geometry on the replay signal in patterned media storage
复制标题
岛几何形状对图案化媒体存储中重放信号的影响
DOI：
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复制
发表时间：
2004
影响因子：
2.1
通讯作者：
H. Shute
中科院分区：
文献类型：
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作者：
P. Nutter;D. M. McKirdy;Barry K. Middleton;David T. Wilton;H. Shute
在将磁存储系统的存储能力扩展到超过1TB/in/sup 2/的移动中，经常引用图案化介质的使用。这里，记录域受磁岛的几何形状而不是记录头的几何形状的约束。传统的二维读出模拟技术使用倒易积分，依赖于在巨磁阻重放磁头下跨磁道介质磁化是均匀的假设。然而，在几何约束介质的情况下，情况并非如此。通过将互易积分推广到三维，研究了孤岛几何形状对垂直图案化磁介质存储中重放信号特性的影响。本文描述了提供不同于传统二维技术所获得的特性的重放脉冲。这些差异的起源可以用磁道上介质磁化强度的变化来解释。
In a move to extend the storage capabilities of magnetic storage systems beyond 1 Tb/in/sup 2/, the use of patterned media has often been cited. Here, recorded domains are constrained by the geometry of the magnetic island and not the geometry of the recording head. Conventional two-dimensional readout modeling techniques, using the reciprocity integral, rely on the assumption that the across-track medium magnetization is uniform under the giant magnetoresistive replay head. However, in the case of a geometrically constrained medium this is not the case. This work investigates the effect that the island geometry has on the characteristics of the replay signal in perpendicular patterned magnetic media storage through the extension of the reciprocity integral to three dimensions. The paper describes replay pulses that offer different characteristics from those obtained by conventional two-dimensional techniques. The origins of these differences are explained by the variation in medium magnetization across the track.