학술논문
Investigations of perpendicular write head design for 1 Tb/in/sup 2/
Document Type
Periodical
Author
Source
IEEE Transactions on Magnetics IEEE Trans. Magn. Magnetics, IEEE Transactions on. 40(1):319-325 Jan, 2004
Subject
Language
ISSN
0018-9464
1941-0069
1941-0069
Abstract
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/.