I. Okamoto, I. Kaitsu, H. Akimoto, K. Sato, E. Abarra, M. Shinohara
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Co Alloy thin film media and granular media for 40 Gb/in/sup 2/ longitudinal recording (projection)
In the last 8 years, the areal density of rigid disk has been improving at annual growth rates of 60% by the application of (G)MR heads. If this growth rate continues, 40 Gh/in' drives will he on the market around year 2003. Thus we have to develop ways to realize such areal density. One specification for 40 Gblin' recording is listed in Table 1. The highest recording density on the medium is reduced from MH) kFCI to 450 kFCI by applying (1,7) MMEEPR4 without a loss in performance [I]. Dm value is estimated at 415 kFCI by analytical calculation. Table 1 One specification for 40 Gb/inz recording
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