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Magnetic recording demonstration over 100 Gb/in2

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23 Author(s)
Zhengyong Zhang ; Seagate Technol., Fremont, CA, USA ; Feng, Yong Chang ; Clinton, T. ; Badran, G.
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Areal density growth has enabled hard disk drives to continually fulfill the demands from new enterprise, desktop, and consumer applications. The demonstration of 100 Gb/in2 is another milestone that was achieved recently and is described in this paper. The recording demonstration employed fully integrated magnetic recording heads and thermally stable multilayer antiferromagnetically coupled (AFC) media through a commercially available channel chip. At a track density of 149 ktpi and linear density of 680 kbpi, the achieved off-track capability with 5% track squeeze was 10% of the track pitch, while maintaining a raw bit-error rate (BER) of 10-4 or better. This yielded an areal density of 101 Gb/in2 with measured on-track raw BER of 5×10-5.

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Magnetics, IEEE Transactions on  (Volume:38 ,  Issue: 5 )