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Track-width dependence of medium noise in metal-particle tape systems

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3 Author(s)
Roesler, Alex ; Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA ; Nayoung Kim ; Zhu, Jian-Gang

Using a high-resolution positioning stage to produce narrow-track recordings, we investigated the track-width dependence of metal-particle tape medium noise. Measurements showed that the medium noise power varies with the square of the track width, creating a linear relationship between the signal power and noise power. The observed track-width dependence results from a long spatial crosstrack correlation length, leading to the conclusion that the head-medium noise continues to dominate the noise in the transition, even at high-track density. Binary noise, which produces a noise power directly proportional to the track width, does not become significant even for track widths below 2 μm

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