Title :
Examination of newly developed metal particle media for >3 gb/in2 recording in GMR-based tape systems
Author :
Sekiguchi, Noboru ; Kawakami, Kikuji ; Ozue, Tadashi ; Yamaga, Minoru ; Onodera, Seiichi
Author_Institution :
Sendai Technol. Center, SONY Corp., Miyagi, Japan
Abstract :
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.
Keywords :
giant magnetoresistance; magnetic heads; magnetic particles; magnetic recording; magnetic tapes; spin valves; 1.8 nm; 45 nm; 50 nm; GMR head; GMR-based tape system; SNR; areal recording density; giant magnetoresistive head; helical scan magnetic recording system; magnetic layer thickness; magnetic particle size; metal particle media; metal particle tape; partial-abrasive property; read-track-base calculation; signal-to-noise ratio; spin-valve head; surface roughness; Anisotropic magnetoresistance; Coatings; Electrostatic discharge; Giant magnetoresistance; Magnetic heads; Magnetic materials; Magnetic recording; Rough surfaces; Surface roughness; Testing; Areal recording density; metal particle (MP) tape; partial abrasive; spin-valve head;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855246
