Investigations of perpendicular write head design for 1 Tb/in/sup 2/
Investigations of perpendicular write head design for 1 Tb/in/sup 2/
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DOI：
10.1109/tmag.2003.821163
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发表时间：
2004-02
影响因子：
2.1
通讯作者：
Sharat Batra;Jonathan D. Hannay;Hong Zhou;J. S. Goldberg
中科院分区：
文献类型：
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作者：
Sharat Batra;Jonathan D. Hannay;Hong Zhou;J. S. Goldberg
我们重新审视了 1 Tb/in/sup 2/ 垂直记录的考虑因素。我们对带有下轨屏蔽 (DS) 的磁头设计和带有下轨和侧屏蔽 (DS-SS) 的磁头设计进行了广泛的建模。需要侧屏蔽来减小热擦除宽度，但是，与 DS 磁头相比，DS-SS 磁头的有效写入区域大幅减小。有效写入场的减小定义了可写入介质的各向异性的上限。因此，很难同时满足1 Tb/in/sup 2/的可写性和热稳定性要求。
We have revisited the considerations of perpendicular recording at 1 Tb/in/sup 2/. We have extensively modeled head designs with the down-track shield (DS) and head designs with the down-track and side shields (DS-SS). The side shields are needed to reduce the thermal erase width, however, there is a substantial reduction in effective write field for the DS-SS heads compared to the DS heads. This reduction in effective write field defines an upper limit for the anisotropy of the medium that can be written. As a consequence, it is hard to simultaneously achieve writability and the thermal stability requirement for 1 Tb/in/sup 2/.