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Challenges in the practical implementation of perpendicular magnetic recording

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4 Author(s)
Cain, W. ; Censtor Corp., San Jose, CA, USA ; Payne, A. ; Baldwinson, M. ; Hempstead, R.

The storing of recorded bits in a perpendicular orientation holds great promise for high linear density recording systems. However, the most common embodiment of perpendicular recording (the probe head/double layer media) has several unresolved issues complicating its integration into commercial disk drives. The major issues include media relaxation, head induced media erasure, resolution limitations due to head-to-underlayer spacing constraints, and extreme sensitivity to stray magnetics fields, which are complex and highly interrelated. It is concluded that the realization of perpendicular recording in commercial disk drives will require new transducer and media designs that solve these problems

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Magnetics, IEEE Transactions on  (Volume:32 ,  Issue: 1 )