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Examination of newly developed metal particle media for >3 gb/in2 recording in GMR-based tape systems

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5 Author(s)
N. Sekiguchi ; Sendai Technol. Center, SONY Corp., Miyagi, Japan ; K. Kawakami ; T. Ozue ; M. Yamaga
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New metal particle (MP) media was developed for use with giant magnetoresistive (GMR) heads. We confirmed the capability of constructing a helical scan magnetic recording system exceeding 3 Gb/in2 recording density, because of sufficient signal-to-noise ratio (SNR) under test conditions at 6.74 Gb/in2 of read-track-base calculations with the media (magneticlayerthickness=50 nm, magneticparticlesize=45 nm, and surfaceroughness Ra=1.8 nm). Low media partial-abrasive properties are incorporated to avoid excessive head gap material wear.

Published in:

IEEE Transactions on Magnetics  (Volume:41 ,  Issue: 10 )