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26.5 Gb/in2 areal-density longitudinal thin film media

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10 Author(s)

A 26.5 Gb/in2 areal-density demonstration was made using low-noise, thermally stable media and advanced dual-spin-valve heads. The demonstration was achieved at a linear density of 504 kbpi, a track density of 52.6 ktpi, and a data transfer rate of 230 Mb/s. The media had Mrt of 0.40 memu/cm2 and coercivity of 2500 Oe, and were composed of a dual-magnetic-layer structure with a five-element magnetic alloy. It was observed that smaller, uniform and isolated magnetic grains are critical to reducing the media noise and for designing ultra-high areal-density recording media that are thermally stable

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Magnetics, IEEE Transactions on  (Volume:36 ,  Issue: 5 )